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7
Worksheet Solutions
Name:
Class: Section:
Acknowledgements
Content Advisor Production
Prof. Sridhar Iyer Creative Director
Vinod Raj
Content Programme Manager
Subject Matter Experts Team Mohan KVK
Rati Arora Project Manager
Shivani Arab Thapaswini Sathya Prathistha
Chandrani Dasgupta
Creative Managers
Renjith Kumar C, Sajesh S, Ganapathi Rao R
Instructional Designers Graphic Designers
Rifka Bose Sreelal K, Anoop Kumar P, Anoop Muthalayil, Arun Kumar Muthalayil, Bharath Babu B,
Mayura Arya Heeral Desai, Joseph Libin T J, Kanaka Rao K, Maria Devanesan A, Mohammed Shafeek
Areekkaden, Murali Mohan S, Nagaraju Tadepalli, Nikhil Rajan, Ramakrishna Ch, Thushal R,
Edit Review Team
Vipin Kanaran, Venkataramana Kokkirala
Oindrilla Dutta, Hrishita Chowdhury,
Jayita Sen Gupta, Disha Nilesh Sampat, Print Designers
Mini Sivashankar, Prableen Kaur Jubbal, Amol Gavasane, Romel Lymon Budala, Santoshi G, Srikanth Dara, Srinivasa Rao Dongala,
Wedetso, Arunashis Bhattacharjee Subbarao Anusuri, Sudheer Jangam, Sunil Kumar B, Umashankar Akkinepalli, Venkata
Narsareddy Ch, Venkatapathi Raju Rudraraju
This series is based on the original Computer Masti series created by Prof. Sridhar Iyer, Dr. Farida Khan,
Vijayalakshmi Chitta, Usha Viswanathan, Malati Baru and Kaumudi Sahasrabudhe.
The Next Curriculum Series is an initiative of Next Education India Private Limited.
Next Education acknowledges the contribution of all the authors and reviewers in the creation of this book.
Copyright © Next Education India Private Limited.
All rights reserved.
No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by
any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission
of Next Education.
The authors and the publisher shall be neither liable nor responsible to any person or entity with respect to
any loss or damage arising from the information contained in the book and any associated material whether
physical, electronic or mechanical.
Every effort has been made to trace the copyright holders and to obtain their permission for the use of
copyrighted material. The publisher apologises for any errors or omissions and would be grateful for
notification of any corrections that should be incorporated in future reprints or editions.
Computer Masti 1 Worksheet Solutions
Published 2017
NEIPL/NB/CM-V4/BK17 :
Published by Next Education India Private Limited
Sri Nilaya Cyber Spazio, Road No. 2, Banjara Hills, Hyderabad - 500034, Telangana, India.
www.NextEducation.in | info@nexteducation.in
Preface
• The book is based on a detailed Computer Science syllabus that has been reviewed by many
experts. This syllabus is available for download at http://www.cse.iitb.ac.in/~sri/papers/CMC-
curriculum-03June2013.pdf.
• The main objective of this series is to develop computer fluency and thinking process skills
of students.
• Fun is an important element of learning. The books in this series explicitly integrate playfulness
as a basis for learning activities.
• The lesson contents are woven around the two conversations between an imaginary facilitator
and two students. The facilitator mostly asks questions that guide the students to discover and
learn topics on their own. It is not necessary that the facilitator does a role play to recreate the
story in every class. Rather, the narrative style is adopted to facilitate reading and consequently
learning by the student.
• Each lesson focuses on specific concepts and associated skills. These concepts are selected such
that: (i) They lay a strong foundation for learning computers. (ii) They contribute towards
general intellectual development, and (iii) They are age appropriate.
• The Worksheets and Activities are designed in such a way that they supplement topics being
covered in other subjects, as much as possible. Group activities are included in each lesson to
encourage collaborative learning. Projects are also suggested to reinforce the learning across
multiple lessons.
• 21st century skills of critical thinking, collaboration, communication and creativity are addressed
in the lesson content and supplementary activities.
• Tips to healthy computer practices are included in the lesson content and supplementary activities.
• The lessons and activities are based on many free and open source software as well.
• The book includes child-friendly illustrations that are sensitive to body image and gender issues.
• Each lesson has a Facilitator’s Corner section, which gives a lesson plan outline, some dos
and don’ts, and pointers for when each worksheet has to be given to students. Any facilitator
(teachers/parents/others) can refer to the Facilitator’s Corner.
• Each book has a Glossary page at the end explaining all the key technical terms covered in the book.
• The book meets the standards suggested for Continuous and Comprehensive Evaluation
(Right to Education).
Computer Masti has been designed and created at Computer Science and
Engineering Department at IIT Bombay.
Contents 2. Inside Computers: Hardware and Operating Systems..................... 06 3. Image Editing: Creating Collage............................................................... 12 4. Advanced Presentation: Digital story telling....................................... 16 5. Word Processor: Designing Ephemera................................................... 19 6. Internet: Content sharing............................................................................ 23 7. Spreadsheet: Data Analysis......................................................................... 26 8. History of Computers: From Abacus to Smart phones.................... 33 9. Introduction to FOSS..................................................................................... 36 10. BASIC Programming: Control and Repetition...................................... 39
2 Inside Computers: Hardware and
Operating Systems
6
Level 7 Lesson 2 WORKSHEETS
1. Classify the following as Hardware or Software. Write H or S next the word.
H/S H/S
Motherboard H BIOS S
Monitor H Word processor S
USB Port H Linux S
Windows S Ubuntu S
Pen drive H Cellphone H
RAM H Scratch program S
ROM H Printer H
Tux paint S Scanner H
Childsplay S Webcam H
Internet browser S CD H
Keyboard H Quick time Media player S
Hard disk H Ipod H
Powepoint S Speaker H
Impress S Microphone H
DVD Drive H
2. Fill in the blanks.
a. Identify and label following pictures, using the list given below.
List of labels:
• Hard disk Motherboard Pen Drive RAM Power supply
• Scanner Flash memory CD drive CD
i.
Hard disk
ii. Motherboard iii.
RAM
v. CD drive
iv. Scanner Power supply
vii.
ix. Pen Drive
viii. CD
7
Level 7 Lesson 2 WORKSHEETS
b. Fill in the blanks. Choose from the list in (a).
1. The documents and content that we create and other applications like word processor and Scratch,
are stored on the Hard disk.
2. The Motherboard is the computer’s main circuit board which holds the CPU.
3. To back up your data, you can use a Pen Drive / Hard Disk.
4. The Scanner is an example of a peripheral device that is used to scan
documents and photographs.
5. The Power Supply unit sends power through the cables to the motherboard and
other components.
6. RAM is the computer’s temporary memory.
7. The software which initialises major hardware components of the computer resides in a
BIOS.
3. Play scrabble: Choose letters from the scrabble rack and unscramble them to answer the questions, as shown
below.
List of Rack Images with
Question The Rack Image with Blank Tile
Jumbled Letters
a. You normally do this to
keep a copy of A C P K B U M B A C K U P
important documents.
b. Computer uses this
system to store R Y I N B T A B I N A R Y
information digitally.
c. My resolution can be
M T O I N O R M O N I T O R
changed for picture
clarity.
d. I am the storage area
R O M Y M E M E M O R Y
responsible for storing
active applications.
4. Tick the options which are NOT a function of the Operating system.
a. It controls the memory needed for various processes.
b. It controls peripheral devices.
c. It is the first software that runs when computer is switched on.
d. It manages the user’s communication with the computer.
8
Level 7 Lesson 2 WORKSHEETS
5. Fill in the missing information.
Component Corresponding Units of measurement
Monitor screen Pixels
Size of the monitor Inches
Microprocessor speed GHz, MHz
Memory GiB, GB
6. What are two ways to store data in each of the following cases?
a. Neela is working on a presentation at home. Tomorrow, she has to take it to her office and give
the presentation. Her computer has an Internet connection, CD/ DVD drive and a USB port. Her
company also has Internet connection at their premises.
Email, Pen Drive, CD and Online Drive
b. Parul is doing her home work on her home computer, which does not have an Internet connection.
She has to take the work to school and show it to her teacher.
Pen Drive , CD and External Hard disk
c. Sai is writing an essay using the word processor, on a computer in the school. He wants to take the
essay home to work on it. The Computer does not have a CD/DVD drive and but has a USB port.
It also has an Internet connection.
Pen Drive and e-mail
7. Tanvi has typed a story and saved it on the computer.
a. Where will the data get saved? Hard disk
(Hard disk, BIOS, Monitor)
b. If she is now editing the story without saving it, where will the data be kept? RAM
(OS, RAM, ROM)
c. While she was working, the power suddenly went off. What could happen to the edited information?
Pick all the right answers.
i. It can be partially recovered when you start the application the next time.
ii. It was stored in the main memory of the computer.
iii. Some of the information was lost and cannot be got back.
iv. It got saved on the Desktop of the computer.
d. What should she do to avoid losing most of the data, even if the power goes off suddenly?
To avoid losing most of the data , she should save it periodically.
If she has not saved , she should use the recover document option.
9
Level 7 Lesson 2 WORKSHEETS
8. Fill in the crossword.
6
C
1 5 7
P E R I P H E R A L
O A U E
R M S
2
T B I O S
S L
3
B A C K U P
T
I
4
M O T H E R B O A R D
N
Across
1. A user interacts with the computer using us: Peripheral devices.
2. I am the software which interfaces the major hardware components of the computer with the operating system.
3. I am a copy of the content that you create on the computer.
4. I am the main circuit board of a computer.
Down
1. We are used to connect the external devices and power supply to a computer. My anagram is torps.
2. I am also called the main memory.
3. I am the brain of the computer.
4. The sharpness of the display increases as the Resolution increases.
Hint: The number of (horizontal x vertical) pixels.
9. Where do the following reside?
Software Reside on
a. Application software Hard Disk
b. BIOS ROM or Flash Memory
c. Operating system Hard Disk
d. Unsaved data in word processor RAM
10
Level 7 Lesson 2 WORKSHEETS
10. Fill in the appropriate blanks in the mind map with the terms given below.
a. Application f. Hard disk j. Speakers n. Webcam
b. software g. Hardware k. BIOS o. Monitor
c. RAM h. Pendrive l. Keyboard p. Main memory
d. Printer i. Mouse m.Computer
e. CD
Inside computer
Software Hardware
Can be
Operating Storage Input/Output
System
software Examples Also called as
Search, Word
processor,
GCompris Input Output
Application devices devices
Flash memory Software Back up
Examples Examples
Contains Can be
taken on Web Cam
Speaker
BIOS Keyboard
CD Monitor
Mouse
Pen Drive Printer
Hard Disk
Holds Also called as
Data Main Memory
temporarily
11. Specify the sequence of steps in the following. First step is already filled.
a. Booting starts 2 2
Start browsing the Internet 6 6
BIOS checks hardware components 3 3
OS starts controlling the functions of the computer 5 5
Computer gets power supply 1 1
BIOS loads the operating system 4 4
b. User enters the username and password 1
Word processor application opens 5
OS loads the word processor application 4
Icon for Word processor application on the Desktop is 3
clicked.
OS checks the login details and allows user to login 2
113 Image Editing: Creating Collage
12Level 7 Lesson 3 WORKSHEETS
1. An original image along with images where some effects have been applied are given below. Identify the effect
applied on the original for each of the 5 images. Hint: The effect can be one of the following: smudge, emboss,
greyscale, brightness increase, contrast increase.
Original Image
a. __________________ Smudge
b. ___________________________
Greyscale
c. ___________________________ Contrast increase
d. ___________________________
Brightness increased
e. ___________________________ Emboss
f. ___________________________
13Level 7 Lesson 3 WORKSHEETS
2. An original image is given along with 3 more images. Identify for each of the image which one of the following
has been applied: resize_canvas, flip vertically, rotate clockwise.
Original Image
a. __________________ Flip Vertically
b. ___________________________
Resize Canvas
c. ___________________________ Rotate Clockwise
d. ___________________________
14Level 7 Lesson 3 WORKSHEETS
3. Following are three drawings. Study the colour wheel. Specify which of the following colour schemes would
you use for each of these drawings and why?
Warm colours, Cool colours, Complementary colours.
1. The colours on the left of the wheel are known as cool colours - colours
which are blue or have a leaning towards blue (yellow-green to blue-
Y
2 violet).
TAR
2. The colours on the right, are known as warm colours - colours which are
EN
1
M
red or have a leaning towards red (yellow-orange to red-violet).
PLE M
3. Complementary colours are those which are opposite each other on the
CO
3 colour wheel. For example, red is opposite green.
a. Complementary colours. This drawing looks best with complementary colours as it enables each part of the
drawing to stand out from each other while adding to the overall effect.
b. Cool colours. We can fill this drawing with cool colours such as blue, green purple.
c. Complementary colors. We can fill this drawing with complementary colors.
154
Presentation
Advanced Presentation:
Digital story telling
16Level 7 Lesson 4 WORKSHEETS
1. Some steps in the three stages of making a presentation are given below in a jumbled order. Arrange them in
correct order of stages.
• Check for spellings and grammar.
• Create a new slide for each main point in the outline. For each main point, list its sub-points.
• Gather information for the given topic and choose an appropriate title for the presentation.
• Check if information is accurate, adequate and follows AWARE rules.
• Group related information and list the main points you want to present.
• Save the presentation file created by giving a file name.
• Check if order of slides has a logical flow and also if sub-points are correctly placed.
• Title of the outline becomes the title of the presentation.
Stage 1- Plan: Deciding an outline for the presentation
• Gather information for the given topic and choose an appropriate title for the presentation.
• Group related information and list the main points you want to present.
Stage 2 - Execute: Creating the Slides
• Title of the outline becomes the title of the presentation.
• Create a new slide for each main point in the outline. For each main point, list its sub-points.
Stage 3 - Impress: Verifying content, adding visual effects and practice
• Check if order of slides has a logical flow and also if sub-points are correctly placed.
• Check if information is accurate, adequate and follows AWARE rules.
• Check for spellings and grammar.
• Save the presentation file created by giving a file name.
2. Given below are some scenarios. Identify which AWARE rule is applicable and whether the rule is followed
or violated.
a. Rahul is making a presentation on ‘UFO: A reality or fantasy’. He searched the Internet and found an
interesting article. He read it, wrote a summary of it in his presentation.
Explain in Your Own Words - Rule is followed.
b. A poster on the ‘ Healthy usage of computers’ is to be made. Riya found some nice photos on a website. She
used them in her poster.
AWARENESS about Copyright - Violated.
17Level 7 Lesson 4 WORKSHEETS
c. Ameya and his friends are making a digital story on ‘Setting up of a botanical garden in the school’.
For this, they went on a field trip, took photos and used them in the story.
AWARENESS about Copyright - Followed , the pictures are taken by Ameya and his
friends. Acknowledge Source of Information - Followed if Ameya and his friends mention
the location of the photographs.
3. Match the various slide views in a presentation with their respective functions.
Slide Views Functions
1. Notes page To view and print more than one slide on a page
2. Slide sorter To view notes or pointers to yourself while presenting
3. Handouts To view the main and sub-points in a presentation
4. Outline To view all the slides at a glance
4. Which of the following could be sources of image files for a presentation? Tick your choice/s.
a. Digital camera
b. Videos from websites
c. Scanned photographs
d. Pictures you draw using mtPaint
5. Rahul is creating a talk on ‘Changes in matter’ for his class. The resources available with him are:
a. A video explaining physical and chemical changes, with examples.
b. Two posters, one on physical changes and another on chemical changes.
For the slide on physical and chemical properties, he has listed down steps on how to present the slide but not in
the proper order. Rearrange the steps in proper order. (Multiple correct answers are possible.)
i. Show the Poster and explain chemical changes.
1
ii. Properties: Physical attributes such as shape, size, colour and state of a substance are
called its properties. A change in which a substance undergoes a change in its physical 4
properties is called a physical change. A physical change is generally reversible.
iii. Narration: A change in which one or more new substances are formed is called a 2
chemical change. A chemical change is also called a chemical reaction.
iv. Play the video and reinforce what was narrated. 5
v. Show the Poster and explain physical changes. 3
185 Word Processor: Designing Cards
and Newsletter
19Class Newsletter
Class 7
March, 2013
School annual day celebrations Our school students won the first prize
The annual day of our in group orchestra. They also won prizes
school was celebrated in painting competition and group dance.
on the 21st of February. The students were put up in the Saraswati
It was conducted in the Mandir school hostel. The students had a
open air theatre. Many nice time interacting with other students
students participated in who had come from all over Maharashtra.
the programmes with lot by Mrs. Pragya
Class teacher
of enthusiasm.
Students from our class Brain teasers
participated in both individual and group 1. Mary’s father has four children; three
events. Mihika and Supriya of our class are named Nana, Nene, and Nini. So
participated in individual events. Mihika what is the 4th child’s name?
performed a mono-act and Supriya 2. Which three numbers have the
presented traditional same answer when added
manipuri dance. Both together and multiplied together?
the performances were 3. What’s full of holes but still
throughly enjoyed by holds water?
the crowd. We also 4. What lies without wings?
performed a group 5. How many letters are in the alphabet?
dance item. The by Sushil Yadav
programmes got over Birthdays this month!
only around midnight. 6. Priyanka Nair 3rd March
Students had put lot 7. Rahul Malhothra 12th March
of efforts in compering and presenting 8. Manoj Ranjan 29th March
the programmes. Let us pat ourselves
on our backs. Announcements
This was the last event that happened A basket ball match between
this academic year and now exams are class 7 and class 8 is scheduled
round the corner. Then the summer on 31st March, at 9.30am.
holidays folks!
by Mayur Phatak
VII Class monitor A summer skating camp for
beginners is being organized by
Inter-school Regional Youth Vidya Mandir school at the school
Festival grounds from 7th to 22nd May,
Our school participated in the Inter school Monday to Saturday. Students
festival organized at Mahabaleswar from above the age of 10 years can
5th to 7th February. The minister for participate. The fee for the camp is Rs. 600.
cultural affairs inaugurated the function.
15 Students from our school participated Answers: Brain teasers:
1) Mary 2) 1, 2 3) Sponge 4) Time 5) ‘the alphabet’-11
in the 3 day event.
20Level 7 Lesson 5 WORKSHEETS
1. Rahul is writing a report using word processor application. He wants to find an alternate word for
‘facility’. Tick the utility he can use.
a. Thesaurus
b. Spelling and grammar
c. Footnotes
2. Identify the formatting options and match the following:
a. Word Processor Italics
b. Word Processor Highlighting
c. Word processor Bold
d. Word Processor Underline
e. Word Processor Font Colour
3. Mark the following statements True or False.
a. To draw geometrical shapes in your documents, you have to use the formatting True / False
toolbar.
b. You can check for spelling mistakes in documents typed in word processor True / False
application.
c. You cannot insert any text or fields in the header or footer of a document. True / False
d. To highlight a text in a paragraph, you can use a different Font colour. True / False
4. Following is a puzzle with the title, author and the name of the book from where it was taken. Underline the
words that have spelling error. In addition, answer the questions that follow.
Title: The Idler and the Devil
Author: Boris A. Kordemsky
Book: The Moscow Puzzles
An idler sighed: “Everione says, ‘We don’t need idlers. You are always
“I will double the money
in the way. Go to the devil!’ But will the devil tell me to get reach?” you have now.”
No sooner did the idler say this then the devil himself stood in front
of him. “Well,” said the devil,” the work I have
for you is light, and you will get rich. Do you see the brije?
Just walk accross and I will double the money you
have now. In fact, each time you cross I will double your money.”
21Level 7 Lesson 5 WORKSHEETS
“You don’t say!”
“But there is one small thing. Since I am so generes
you must give me Rs. 24
after each crossing.” The idler agreed. He crossed the
bridge, stopped to
count his money...a miracle! It had doubled. He
threw Rs. 24 to the devil and crossed again.
His money doubled, he paid another Rs. 24, crossed a
third time. Again his money doubled. But now he had only Rs. 24, and he
had to give it all to the devil. The devil laughed and vanished.
The moral: When anyone gives you advise you should think before you act.
How much money did the idler start with?
a. Suppose you want to make the title prominent. What will you do?
Specify: Font style Bold Font name Arial Font size 24
b. What are the formatting options that your friend should use for the author’s name, and Book name?
Specify:
Authors Name: Font style Italics Font name Arial Font size 14
Book Name: Font style Bold Font name Arial Font size 30
c. The first letter of the names of characters are in small case in some places. Is there an option in
the Format submenu to change the case of the letter?
Yes
d. The word ‘generous’ is misspelled ‘geners’ in the quiz given above. Specify the option that is used in
a word processor to correct the spelling without retyping.
Spellcheck
e. What would you do to count the total number of words in the content given above? Explore and
find the option available in the word processor.
Wordcount
f. Your friend adds illustrations to the puzzle and the document is of 4 pages now. To stack the pages in
correct order, what should your friend do in the soft copy?
Add page numbers
226
tejas@xyz.co
tejas@x
e mail
cmgroup@xyz.com
com jyoti@xyz.com moz@x
moz@xyz.
Internet: Content sharing
yz.com
23Level 7 Lesson 6 WORKSHEETS
1. Class 7 students are all going on a picnic to a nearby park. The Class monitor has to send emails to parents of
students about the details of the trip, and also to the class teacher and the school head master, to inform them
about their trip. Fill the various fields in the email given below. The ‘Subject’ should be relevant to the content
of the email.
anilgupta@gmail.com, cherylldsouza@yahoo.com, murtaza@hotmail.com, priyesh123@gmail.com,
priyankap@gmail.com, priyasingh@xyzschool.com (Class Teacher), headmaster@xyzschool.com (Principal)
Details of School picnic to National Park
2. Maitri is sending an email to her grandparents. She wants to share some photos with them. Which option in
the email interface can she use for sharing photos?
a. Subject
b. Attach files
c. Contacts
3. You have received an email from a stranger. The subject field says “Free games to enhance your thinking skills”.
The email has some attachments. What should you do?
a. Open the attachments and play the games
b. Ignore it as it may contain virus
c. Forward it to your friends
4. Rani is inviting all her close friends to her house. She has prepared an email and used the ‘To’ field to write the
email address of all her friends. You are also invited. You want to thank Rani, what option will you use ‘Reply’
or ‘Reply All’? Give reasons to support your answer.
Reply because I would only want Rani to see the message. If I use ‘Reply All’ , all the other friends would
also get to see the message.
5. What is NOT true about sharing files on the Internet?
a. You can retrieve files whenever needed.
b. You cannot allow user groups to edit files.
c. There is no need to keep a backup in your system.
d. We need Internet connection to access files.
6. What are some features of Cloud Computing?
a. The data is stored in a server.
b. The physical location of the server need not be known to the user.
c. User can access data from anywhere.
d. Internet connection is not required.
24Level 7 Lesson 6 WORKSHEETS
7. Vacations have started and the class teacher has asked Avinash, the class monitor to intimate all students
about Vana-Mahotsav which is planned after the school reopening. The students in the class are divided into
different houses namely: Red, Blue, Green and Yellow. Each house has about 10 students in it. Avinash has got
the email address of all the students.
a. How can he intimate all the students about the event? Choose the better option and give reason.
• Send individual mails to each student.
• Create a group and send an email to the group.
Create a group and send an e-mail to the group. If there are any changes in the schedule , he can
reply on the group to inform all the people.
8. Using an e-mail application you can share a document with your friends. Then why do we need websites like
Picasa and Google docs, for sharing files?
There are many advantages of using websites like Picasa and Google docs for sharing files. Through
picasa we can share lots of images and they can be accessed with a group of friends. Through google
docs we can share files and collaborate with friends.
9. Here are some websites and some file types given below. What are the file types that can be uploaded and
shared on these websites? (Documents, spreadsheets, photographs, presentations, videos)
a. Googledocs Documents, spreadsheets, presentations, videos, photographs
b. Picasa Photographs
c. Scribd Documents
d. Flickr Photographs
e. YouTube Videos
f. SlideShare Presentation
257 Spreadsheet: Data Analysis
26Level 7 Lesson 7 WORKSHEETS
1. Following is a line graph for the temperatures in 4 cities, namely New Delhi, Mumbai, Bangalore and Jodhpur,
on a given day. Study the graph and answer the following questions.
a. From the above graph, fill the data in the table given below.
Time Temperature
New Delhi Mumbai Bangalore Jodhpur
12 Midnight 24 28 21 33
03:00:00 am 21 27 19 30
06:00:00 am 22 27 21 29
09:00:00 am 28 31 25 32
12:00:00 noon 33 34 29 36
03:00:00 pm 33 34 29 39
06:00:00 pm 32 31 28 40
09:00:00 pm 29 28 25 37
b. What is the temperature difference between midnight and noon in New Delhi?
Ans.: 9 degree celsius
c. Which city was the hottest at 3pm?
Ans.: Jodhpur
d. In New Delhi, did the temperature rise or fall from 9 pm to 12 noon?
Ans.: The temperature rose by 4 degrees celsius
e. In which city was the lowest temperature recorded? What was the lowest temperature?
Ans.: Bangalore, 19 degrees
f. In which city was the highest temperature recorded? What was the highest temperature?
Ans.: Jodhpur , 40 degrees
g. A city is comfortable, when the temperature is below 30 degrees in the daytime. Which is the most comfortable
city?
Ans.: Bangalore
h. Order the cities in descending order of comfort?
Ans.: Bangalore, New Delhi, Mumbai , Jodhpur
i. A city is extreme, when the difference between highest and lowest temperatures is less than 20 and more than
10 degrees. Which is the most extreme city?
Ans.: New Delhi
27Level 7 Lesson 7 WORKSHEETS
2. The price variation for 1 kg of vegetables in the month of March is given in the graph below. Study the graph
and answer the following questions.
a. Using the data given in the graph, fill in the table given below.
Price in the month of March
Sr. No. Name of the vegetable week1 week2 week3 week4
1 Onion 30 25 20 15
2 Potato 20 15 10 15
3 Tomato 35 30 30 25
4 Cabbage 15 20 20 25
b. Which are the two vegetables that maintained the same price for two weeks?
Tomato and Cabbage
c. What is the difference between the price of tomato in the beginning of March and end of
March?
`10 per kg
d. Name the vegetable whose price consistently fell in March?
Onion
e. Which vegetable was cheapest in the 2nd week of March?
Potato
f. What is the difference in prices of cabbage and tomato in week 3?
`10 per kg
28Level 7 Lesson 7 WORKSHEETS
g. Riju is buying vegetables in week 3. He has got 80 rupees with him. The shop has all the above vegetables. He
has to buy three types of vegetables. The minimum quantity he can buy of each vegetable is 1 kilogram. But he
has to follow the conditions below:
i. If he buys Onion, then he has to buy Potato also.
ii. If he buys Tomato he cannot buy Cabbage.
Find out the various options available to him.
a. Onion (1kg), Potato (1kg), Tomato (1kg) . Total = 60
b. Onion (1kg), Potato (2kg), Tomato (1kg) . Total = 70
c. Onion (2kg), Potato (1kg), Tomato (1kg) . Total = 80
d. Onion (1kg), Potato (3kg), Tomato (1kg) . Total = 80
e. Onion (1kg), Potato (1kg), Cabbage (1kg) . Total = 50
f. Onion (1kg), Potato (1kg), Cabbage (2kg) . Total = 70
g. Onion (1kg), Potato (2kg), Cabbage (1kg) . Total = 60
h. Onion (1kg), Potato (2kg), Cabbage (2kg) . Total = 80
i. Onion (1kg), Potato (3kg), Cabbage (1kg) . Total = 70
j. Onion (1kg), Potato (4kg), Cabbage (1kg) . Total = 80
k. Onion (2kg), Potato (1kg), Cabbage (1kg) . Total = 70
l. Onion (2kg), Potato (2kg), Cabbage (1kg) . Total = 80
3. Here is the data of a survey conducted among 45 students of a class, on their favorite food.
Food Item Number of students
Pizza 15
Dosa 6
Noodles 9
Burger 10
Soup 5
Draw a pie chart for this data.
29Level 7 Lesson 7 WORKSHEETS
4. The given pie chart represents the types of movies preferred by movie goers. 60 movie goers were
interviewed for the survey. Study the pie chart. The degree of the angle for each section is mentioned
in it.
0
0
0
0
0
a. Fill in the table for the data given in the pie chart.
Drama 30/360 * 60 = 5 5/60 * 100 = 8.3%
Cartoon 120/360 * 60 = 20 20/60*100 = 33.3 %
Comedy 120/360 * 60 = 20 20/60*100 = 33.3 %
Horror 60/360 * 60 = 10 10/60*100 = 16.7 %
Thriller 30/360 * 60 = 5 5/60 * 100 = 8.3%
b. Draw a bar graph of percentage of people who liked each category.
100
y-axis
10
x-axis
30Level 7 Lesson 7 WORKSHEETS
5. Table given below contain the overall score card of the Indian Soccer League - 2014. Enter the data in
a spreadsheet file.
Team Match Played Won Draw Lost
Chennai 14 6 5 5
Goa 14 6 4 4
Atletico de Kolkata 14 4 7 7
Kerala Blasters 14 5 4 4
Delhi Dynamos 14 4 6 6
Pune City 14 4 4 4
Mumbai City 14 4 4 4
North East United 14 3 6 6
a. Organize the data in the order of match won.
b. Re-organize the data in the order of most matches won and least matches lost.
Team Match Played Won Draw Lost
Chennai 14 6 5 5
Goa 14 6 4 4
Atletico de Kolkata 14 5 4 4
Kerala Blasters 14 4 7 7
Delhi Dynamos 14 4 6 6
Pune City 14 4 4 4
Mumbai City 14 4 4 4
North East United 14 3 6 6
Team Match Played Won Draw Lost
Chennai 14 6 4 4
Goa 14 6 5 5
Atletico de Kolkata 14 5 4 4
Kerala Blasters 14 4 4 4
Delhi Dynamos 14 4 4 4
Pune City 14 4 6 6
Mumbai City 14 4 7 7
North East United 14 3 6 6
31Level 7 Lesson WORKSHEETS
6. Enter the data of employees of an organization, as given below, in a spreadsheet file. Fill up the empty
fields as per the criteria given.
Name Age Rating Basic HRA PF Total Salary Increment Net Salary
Salary
Shiv Shankar 56 A 40000 4000 4800 48800 5280 54080
Solanki
Pratho Sen 45 A 45000 4500 5400 54900 5940 60840
Sohini Pandey 34 B 20000 2000 2400 24400 1760 26160
Vibhu Batheja 28 A 22500 2250 2700 27450 2970 30420
Nethra Iyer 30 A 35500 3550 4260 43310 4686 47996
Abhay Shah 33 B 44500 4450 5340 54290 3916 58206
Soma Roy 40 B 25000 2500 3000 30500 2200 32700
Sunil Jha 37 C 16000 1600 1920 19520 0 19520
Murari Joshi 35 B 18000 1800 2160 21960 1584 23544
Siddharth 29 C 27000 2700 3240 32940 0 32940
Krishnamurthy
a. HRA (House Rent Allowance) is 10% of Basic salary.
b. PF (Provident Fund) is 12% of Basic salary
c. Employees who are rated ‘A’ gets an increment of 12% of Basic and HRA.
d. Employees who are rated ‘B’ gets an increment of 8% of Basic and HRA.
328 History of Computers: From
Abacus to Smart phones
33Level 7 Lesson 8 WORKSHEETS
1. Given are some of the devices used for calculation. Can you arrange them in sequence of which appeared first?
Palmtop Abacus ENIAC
Pebbles Napier bones Punched card reader
Desktop Laptop Pascaline
Pebbles, Abacus, Napier bones, Pascaline, Punched card
Reader, ENIAC, Desktop, Laptop, Palmtop
2. Explain the factors which resulted in the inventions of devices like Napier bones, slide rule in the 16th century.
Explorations of various continents and trading brought in the requirements of precise
calculations of sea routes, accounting, planetary positions, and navigational tables in the 16th
century. Mechanical devices were also developed to assist in tedious and repetitive calculations
like generating calendars of a year, taxing and trading. These are the factors which resulted in
the inventions of devices like Napier bones,slide rule in the 16th century.
3. Pick the right options.
a. Which one is not true about the fourth generation computers?
i. These are cheaper.
ii. They are compact.
iii. They are reliable.
iv. They use transistors.
b. Which are the features of embedded devices?
i. They are used in phones and washing machines.
ii. They can control multiple devices.
iii. They are small in size.
iv. User can do programming with them.
A. Both i & ii B. Both i & iii C. Both ii & iv D. Both iii & iv
4. List some advantages of fifth generation computers compared to the other generation computers.
They can handle huge applications and data processing
They are portable.
They are capable of catering to various applications in a network environment .
They can perform scientific analysis which requires high speed processing.
34Level 7 Lesson 8 WORKSHEETS
5. Here is a picture which tells us about the history of computers from mid twentieth century. Study the picture
and answer the following questions.
1980
1945-55 Computers from the
mid 20th century from
from Concept of Artificial
used Intelligence
EDVAC, First are categorised into Fifth
ENIAC, examples generation generation
UNIVAC examples
were
used followed by followed by
Huge and Second Fourth Desktop, Palmtop,
expensive Vacuum tubes generation generation Laptop, Mainframe,
suc by had Supercomputer
used ce e Third d
replaced ded de
by generation ce e from
Transistors triggered suc used High computing
capabilities
used 1970
Transistor
invention Increased speed Microprocessors
and efficiency
Intrgrated
circuits
a. From the figure can you tell which was the technology used in the first, second, third, fourth and fifth
generation computers?
First generation used vacuum tubes, second generation used transistors, third generation used
integrated circuits, fourth generation used microprocessors and fifth generation used artificial
intelligence.
b. Name two first generation computers.
EDVAC and ENIAC
c. Which invention resulted in the evolution of second generation computer?
Transistor invention
d. Give some examples of fifth generation computers.
Desktop, Palmtop, Laptop, Mainframe and Supercomputers.
359
Download
Introduction to FOSS
36Level 7 Lesson 9 WORKSHEETS
1. Select the correct option.
a. Which of the following scenarios describe the benefits of using FOSS applications?
i. Ravi uses Inkscape for both commercial and personal use.
ii. Mona has downloaded a paid version of a designing tool
iii. Sovit has modified the source code of LibreOffice Calc to add a new function.
iv. Bala likes using Ubuntu OS and wants to distribute it to his friends.
A. i, ii and iii
B. ii, iii and iv
C. i, iii and iv
D. i, ii and iv
b. Which of the following pairs is correct?
i. XMind - Brainstorming
ii. LibreImpress - Word processing
iii. mtPaint - Image editing
iv. Scribus - Desktop Publishing
A. i,ii and iii
B. i,ii and iv
C. ii, iii and iv
D. i,iii and iv
c. Find the odd one out from the following software and give reason for it.
i. GIMP
ii. MS Excel
iii. Audacity
iv. Mozilla Firefox
Rest all are FOSS based tools and applications.
2. What do you think are the benefits of using FOSS tools for students?
FOSS provides students with the option to use software which is free of cost. It also enables students to share
and distribute the software with their friends. Students can also understand how the software works as the
source code used to develop the software is freely available. They can study the software’s functionality and
aim to improve its working or add more features. They can share their knowledge using FOSS and build a
thriving community of learners where knowledge is created and shared.
3. How would you install the different FOSS applications?
FOSS applications are freely available on the Internet in a downloadable format. You can search for the
software using its name or search terms such as foss tools and the purpose of the application; for eg foss tools
for desktop publishing. It’s better to download the software either from the software’s website or from a
reputed download platform such as sourceforge.net and en.softonic.com You can refer to the documentation
available on these websites about the steps to install the application. Once the software executable file is
downloaded, you can run it by which the application auto-installs on the system.
37Level 7 Lesson 9 WORKSHEETS
4. Where would you look for more information about documentation and troubleshooting for FOSS tools?
Most FOSS tools and application have documentation available on the website homepage for:
Usage of features
• Other help links that can be searched for are: tutorials, sample problems and solutions and application
output samples.
• Some applications may also provide the documentation under the Help menu.
Troubleshooting
• For clarifications on application, Frequently Asked Question (FAQ) section is generally available at the
application website.
• Queries can be uploaded at user forums of the application.
5. State the freedoms associated with using FOSS tools? Compare the freedoms with the restrictions associated
with proprietary tools and software. In your opinion what are the long term benefits of using FOSS?
Free software is about the users’ freedom to run, copy, distribute, study, change and improve the software. More
precisely, it means that the program’s users have the four essential freedoms:
Freedom 0: The freedom to run the program, for any purpose.
Freedom 1: The freedom to study how the program works, and change it to make it do what you wish. Access to
the source code is essential for this. Providing access to the source code is called Open Source.
Freedom 2: The freedom to redistribute copies so you can help your neighbor.
Freedom 3: The freedom to distribute copies of your modified versions to others. By doing this you can give the
whole community a chance to benefit from your changes.
For the comparison state the pros and cons from the end user point of view.
Pros for using FOSS tools
• Provides universal access for all users
• Can be downloaded and distributed
• Helps save cost and expenses
• Can be customized to suit user requirements
• Easy access to support through forums and discussion boards
Cons
• Updates depend on number of users
Cons for using proprietary software
• Expensive
• Restrictions on how the software can be used
• Available to limited number of users as per the cost
• Support is easy to access though requires additional cost
Pros
• Newer versions available at regular intervals
Long-term benefit of using FOSS tools:
Example: A dynamic community of software users and developers which helps in evolution of the software as per
user requirements wherein all stakeholders are involved.
3810
1Memo
Memory
ry
CP
if SP > CP BASIC Programming:
Control and Repetition
Profit=1111
1
39Level 7 Lesson 10 WORKSHEETS
1. What is the output of the program?
a.
for t = 1 to 10 step 2
PROGRAM
p=3
print p*t + “,” ;
next t
i. 39152127 iii. Multiplication table of 3
ii. 3, 9, 15, 21, 27 iv. Multiplication table of 2
b. Sum=245
If Sum>245 then
PROGRAM
Print “You reached level 3”
else
Print “Still to go”
End if
i. You reached level 3 iii. 245
ii. Still to go iv. none of the above
c.
Dim Workingdays$(4)
PROGRAM
Workingdays$={“Monday”,“ Tuesday”, “Wednesday”,
“Thursday”, “Friday”}
Print Workingdays$[2]
i. Monday ii. Tuesday iii. Wednesday iv. Thursday
d. Dim a(3)
a[0]= 89
PROGRAM
a[1] = 23
a[2] = a[0] + a[1]
For i = 1 to 2
Print a[i]
next i
iii. 89
i. 89
23
ii. 23
112
iv. 23
112
e. for t = 1 to 10 Memory
for p=1 to 10
PROGRAM
t p Print
print p*t 1 1 1
next p 1 5 5
next t 1 10 10
2 1 2
i. Squares of numbers from 1 to 10
2 5 10
ii. Multiplication tables of all numbers from 1 to 10
2 10 20
iii. Squareroots of numbers from 1 to 10 10 1 10
iv. None of the above 10 5 50
10 10 100
40Level 7 Lesson 10 WORKSHEETS
2. Here is a program written in BASIC-256. Insert the necessary comments clearly stating the function of each
code segment.
# Define arrays answer and display. Initialise the answer array
Dim Answer$(5)
Dim Display(5)
Answer$ = {“First”, “Second”, “Third”, “Fourth”, “Fifth”}
# Let user input the 5 numbers and save them in display array
For i=0 to 4
Input Answer$[i] + “ Number: “, answer
Display[i] = answer
Next i
# Print the numbers in the display array_
For t=0 to 4
Print Display[t]
Next t
3. Insert the rect statement in the following program that would give the output shown in red in the graphics
output area.
clg Graphics output
for i = 1 to 20
isquare=i*i
Print i*i
PROGRAM
color blue OUTPUT
rect isquare,isquare,i,i
color red
rect 300-isquare,isquare,i,i
______________________
______________________
______________________
next i
41Level 7 Lesson 10 WORKSHEETS
For i=0 to 5
counter=0
Print “Do you own a car? (answer with yes or no) “
Input answer$
If answer$=”yes” then
counter=counter+1
end if
Next i
print “Number of residents with a car:” + counter
Solution:
Here is the correct program.
counter =0
for i=0 to 5
Print “Do you own a car?”
Input answer$
If answer$ = “yes” then
counter = counter +1
end if
next i
print “ Number of cars “ +counter
b. Now insert code into your above program to record the answers of each residents in the building.
Hint: Use an array to store the answers of the residents.
Solution:
counter =0
Dim Answerlist$[6]
for i=0 to 5
Print “Do you own a car?”
Input answer$
Answerlist$[i]= answer$
If answer$ = “yes” then
counter = counter +1
end if
next i
print “ Number of cars “ +counter
42Level 7 Lesson 10 WORKSHEETS
5. a. Use the following graph sheet to draw the following shapes, as though a computer is drawing pixels.
i. pentagon
ii. right triangle
iii. star
iv. Hexagon
For example:
b. Write a program in BASIC-256 to draw any one of the above shapes using the line statement.
color red
line 50,50,50,200
PROGRAM
line 50,200,250,200
line 250,200,50,50
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