Computing wonders Grade 3 book

Computing

Wo n d e rs!

3rd Grade

10100

1st Edition

Name:
Roll no:
Section:

ACKNOWLEDGEMENTS

Project Team/Co-Author

ED-TECH Research and Development Department
Tarib Ahmed

Chief Operating Officer- TechTree

Muhammad Taha

Chief Technology Officer- TechTree

Uzair Iqbal

Manager Ed-Tech and Research- TechTree

Saad Bin Imtiaz

Head of Trainings & STEM Research- TechTree

The entire computing curriculum in the STEM wonders book series have been mapped
with the attainment levels of ICDL & Single National Curriculum Pakistan education

policy 2021.

All rights reserved by TechTree. No part of this publication may be reproduced or
transmitted in any part by any means at any time.

Content Computing Wonders

CO N T E N T S 01 OPERATING SYSTEMS 01

1.1 Computer Operating System
1.2 Basic Computer Hardware
1.3 My Desktop

02 EXPLORING PAINT 13

2.1 Let’s Draw
2.2 Let’s Select and Move
2.3 Let’s Copy
24. Undo and Redo
2.5 Rotate and Flip
2.6 Let’s Resize
2.7 Let’s Skew

03 WRITING MY
FIRST ARTICLE 27

3.1 Components of MS Word
3.2 Work with text
3.3 Create a title for your document
34. Create a List

04 TANGRAM ROCKET 48

3.1 Objective
3.2 Introduction
3.3 Materials
34. Instructions
3.5 Observation
3.6 Precaution

Content Computing Wonders

CO N T E N T S 05 I VISIT THE WORLD 55

5.1 How to surf Internet
5.2 The web page
5.3 Educational Games on Internet
54. Copying data from Web page

06 CODING 72

6.1 Coding Platform Code.org
6.2 Jigsaw- Learn to drag and drop
6.3 Maze Sequence
64. Debugging
6.5 Real Life Algorithm- Plant a Seed

Contents

0 1S e ct i o n

OPERATING
SYSTEMS

Students will learn :

1. Computer Operating System
2. Basic Computer Hardware
3. My Desktop

01-Operating Systems Computing Wonders

1 COMPUTERS

A computer is an electronic machine capable of
performing different calculations and tasks. A
computer is a multi-tasking device capable of
following your commands. You can use a computer
to complete your homework, write a document,
listen to music, watch a movie, or play games. You
can store your documents, pictures, or even videos
on a computer. Nowadays every office, institute, and business uses computers to
do their work faster and more easily.

A computer is up of two main parts: hardware and software.

Hardware is the physical parts of the computer that
you can touch with your hands. For example, a keyboard
or a mouse.

Software is the program that
helps you to operate computers
and perform different tasks. You cannot touch the
software because the software is not a physical part of
the computer. Let’s consider the example of your
thoughts. Can you touch your thoughts? No, but thoughts
are there controlling your actions. The game you play is also software.

Let’s discuss what is an operating system.

Hardware Software
The non-physical part of the
The physical part of the computer.
computer.
It may be replaced with a new It may be reinstalled using a backup
component if it is damaged.
copy if it is damaged.
Physically, hardware will degrade with Although the software does not age,
time.
it can be harmed by viruses and
A virus cannot physically damage the errors.
hardware.
The software can be infected by a
A keyboard, mouse, monitor, and virus.
speaker are all examples of the
The most commonly used software
hardware. are; Windows, Microsoft Word,
Google Chrome, etc.

2

01-Operating Systems Computing Wonders

1.1 Operating System

A program or set of programs that controls the
processing of the user's applications and controls the

operation of a computer. Consider
the operating system as an
interface between the computer
hardware and a user. The operating
system manages all the hardware and software applications
for the computer. The most commonly
used operating systems are Windows by
Microsoft, macOS by Apple Inc., and Linux by Linus Torvalds.

Let us discuss some uses of an operating system.

• Controls the hardware such as scanners and printers.
• Organize the use of memory between programs.
• Provide an interface for the user to operate a computer.
• Maintains the security of the computer.
• Deals with user instructions.

1.2 Basic Computer Hardware

Let’s discuss the minimum hardware requirement to operate a
computer. You need four hardware devices to use a computer.

1. A desktop (Fig 1.1),
2. A monitor (Fig 1.2),
3. A keyboard (Fig 1.3),
4. A mouse.

Fig 1.1

Fig 1.2

Fig 1.3

Fig 1.4

3

01-Operating Systems Computing Wonders

1.3 Desktop

Here is a snapshot of the Windows 10 desktop.

> Windows start button (1). Fig 1.5
> Windows search bar. (2)
> Windows taskbar. (3) File Icon
> Desktop Icon. (4) File Extension

File

The stored data or information on
your computer are called files. Files
have many types, text files, audio
files, image files, and video files. To
identify a file there are three things
to look for.

1. File icon (Fig 1.6), Grade.pdf
2. File name (Fig 1.6),
3. File type or extension (Fig 1.6). File Name

Different types of files have Fig 1.6
different file icons.

4

01-Operating Systems Computing Wonders

A file name is used to differentiate a file from others.
An extension shows the type of the file.

Open a file Fig 1.7

You open a file to preview or edit the
file.

> Locate the file on your computer and
double-click it with the mouse. (Fig
1.7)

> The file be opened. (Fig 1.8)

Fig 1.8

Delete a file
If there are some unnecessary files you can delete them. (Fig 1.9)
> Right-click on the file icon.
> Click Delete.

cccc

Fig 1.9

5

01-Operating Systems Computing Wonders

Folder

A folder is a location on your computer where you can save your
files and keep them organized. The folder only has an icon and a
name. Folders do not have types. (Fig 1.10)

Fig 1.10

Create a folder Fig 1.11

> Navigate to the location you want to create a folder.

> Right-click anywhere on the empty
space. (Fig 1.11)

> Click New (Fig 1.12)

> Click Folder. (Fig 1.13)

> Type a name and press Enter. (Fig
1.14)

Fig 1.12

Fig 1.13

Fig 1.14

Subfolder
A folder inside a folder is called a subfolder.

6

01-Operating Systems Computing Wonders

Copy a folder
To copy a folder to another location on your computer or outside your computer
follow these steps.
> Right-click the folder icon and click Copy. (Fig 1.15)
> Go to the location you want to copy this folder.

Fig 1.15

> Right-click anywhere on the empty space and click Paste. (Fig 1.16)

Fig 1.16

Move a folder

To move a folder
from one location
to another follow
these steps:

> Right-click the
folder icon and
click Cut. (Fig
1.17)

> Go to the Fig 1.17
location you want
to copy this folder.

7

01-Operating Systems Computing Wonders

> Right-click anywhere on the empty space and click Paste. (Fig 1.18)

Fig 1.18

Search and find

If you keep working on the computer files and folders increase. It is difficult to
remember every file and folder location
therefore, Windows has a built-in search
function.

> Click on the search icon in the taskbar. (Fig Fig 1.19
1.19)

> Type in the file or folder name and press enter. (Fig 1.20)

> Click on the file or folder you
want to open. (Fig 1.20)

Fig 1.20

8

01-Operating Systems Computing Wonders

Search with file explorer Fig 1.21
There is another way to search files and folders using file explorer.
> Double-click This PC icon. (Fig 1.21)
> A new window will open. (Fig 1.22)
> Type the file or folder name in Search This PC bar. (Fig 1.22)
> Press Enter.
> Double-click the file or folder you want to open. (Fig 1.23)

Fig 1.22

Fig 1.23

Start a Program

> To start a program search for the program in

the search bar by clicking the

search icon. (Fig 1.24)> Click the

Icon of the program and wait.

Soon the program will open. (Fig

1.25

Fig 1.24 Fig 1.25

9

01-Operating Systems Computing Wonders

Choose the right one!

1. The stored data and information are called ____________.

a. Folders. ☐

b. Files. ☐

c. Extension. ☐

d. None of the above. ☐

2. ____________ shows the type of the file.

a. Folders. ☐

b. Files. ☐

c. Extensions. ☐

d. None of the above. ☐

3. A location on the computer to organize your files.

a. Files. ☐

b. Subfolder. ☐

c. Folder. ☐

d. None of the above. ☐

4. A folder inside a folder is called ___________.

a. Subfolder. ☐

b. Child folder. ☐

c. Portion. ☐

d. None of the above. ☐

5. Do folders have types? ☐
a. True. ☐
b. False.

10

01-Operating Systems Computing Wonders

Answer the following!

1. Define the file? Also, write the steps to copy a file.

2. Write the step to delete a file.

3. Define folder? Also, write the steps to create a folder.

11

01-Operating Systems Computing Wonders
4. Write the steps to move a folder.

5. Write steps on how to search and find a file or folder using the search bar
on the desktop.

12

STEM Wonders

0 2S e ct i o n

EXPLORING

PAINT

Students will learn :

1. Let’s Draw
2. Let’s Select and Move
3. Let’s Copy
4. Undo and Redo
5. Rotate and Flip
6. Let’s Resize
7. Let’s Skew

02- Exploring Paint Computing Wonders

2 EXPLORING PAINT

Microsoft Paint, also known as 'MS Paint,' is a basic graphics and painting
software included with all Microsoft Windows editions. MS Paint can be used to
sketch, color, and edit photographs, even those that have been imported from a
digital camera. Follow these steps to open MS Paint:

> Click the search button on the Windows taskbar.

> Type paint and press Enter.

> Paint will be the first search
result, click it and the software
will open.

See Fig 2.1 for reference.

Fig 2.1

14

02- Exploring Paint Computing Wonders

Let’s explore the MS Paint interface. 5. Drawing Area. (5)
6. Status Bar. (6)
1. Quick Access Bar. (1) 7. Zoom Tool. (7)
2. Title Bar. (2)
3. Menu Bar. (3)
4. Ribbon. (4)

2.1 Let’s Draw Fig 2.2
Fig 2.3
Drawing is the most
important function of
any drawing software.
You can draw
different shapes in
MS Paint. Follow the
steps to draw a rectangle.

> Select the shape from the Ribbon. (Fig 2.3)

> Now using the mouse click and hold the left-click, and start dragging the cursor
while holding the left-click.

> Keep dragging the mouse till you get the desired size, then
release the right-click.

> The shape will be visible in the drawing area. (Fig 2.4)

Fig 2.4

15

02- Exploring Paint Computing Wonders

2.2 Let’s Select and Move

There are two ways to select an object or figure in
MS Paint.

1. Rectangular selection – mostly used to select
an entire figure.

2. Freeform selection – used to select an entire
image or part of an image.

Let’s select a figure using the rectangular selection
tool.

> Click Select and then click Rectangular selection. Fig 2.5
(Fig 2.5)

> Using the mouse cursor select the entire figure.
(Fig 2.6)

> Now move the cursor at end of the selection box. A
new cursor will appear. (Fig 2.7)

Fig 2.6 > Click and hold the left-
click of the mouse and
start moving the cursor
while holding the left-
click.

> Release the mouse click Fig 2.7
when the figure is at
your desired place.

Now let’s select a figure using the freeform
selection tool.

> Click Select and then click Free-form selection.
(Fig 2.8)

> Using the mouse cursor select the entire figure.
(Fig 2.9)

Fig 2.8

16

02- Exploring Paint Computing Wonders

> Now move the cursor at end of the selection box. A Fig 2.9
new cursor will appear. (Fig 2.10) Fig 2.10

> Click and hold the left-click of the mouse and start
moving the cursor while holding the left-click.

> Release the mouse click when the figure is at your
desired place.

Now let’s select a
part of the figure.

> Click Select and
then click Free-
form selection.

> Using the mouse
cursor select a
part of the figure.
(Fig 2.11 and 2.12)

Fig 2.11

> Now move the selected part using the mouse.

> Click and hold the left-click of the mouse and
start moving the cursor while holding the left click.
> Release the mouse click when the figure is at your
desired place. (Fig 2.13)

Fig 2.12

Fig 2.13

17

02- Exploring Paint Computing Wonders

2.3 Let’s Copy

Copying is one of the most useful options in
any textual or drawing software. Now let’s
learn how to copy a figure.
> Select the entire figure. (Fig 2.14)
> Right-click in the selection box, and click
Copy. (Fig 2.15)

Fig 2.14

> Now right-click anywhere on the drawing
area, then click Paste. (Fig 2.16)
> The copied figure will appear on the
drawing area. (Fig 2.17)

Fig 2.15

Fig 2.16

Fig 2.17

18

02- Exploring Paint Computing Wonders

Let’s do it!

Let’s copy a figure. Instead of using the copy option, use the cut option and find
out the result.

2.4 Undo and Redo

Undo and Redo are two of the most useful options in MS Paint. In the previous
task, you copied a rectangular figure let’s see what will happen if you use Undo
option.

Follow these
steps to
perform
Undo.

> You will

have two

figures in

the drawing

area. (Fig

2.18)

> Now click Fig 2.18

the Undo option, you can find the Undo option in the Quick Access Bar. (Fig 2.19)

> After clicking the Undo option, the last copied Fig 2.19
figure will disappear. (Fig 2.20)

Note: Undo simply means going back a step.

Fig 2.20

19

02- Exploring Paint Computing Wonders

Now let’s learn what will happen if you use the Redo option.

> You have only one figure after undoing the copy
command. (Fig 2.20)

Fig 2.21

> Now click the

redo option, you

can find the Redo

option in the

Quick Access

Bar. (Fig 2.21)

Fig 2.22 > After clicking
the Redo option,
(Fig 2.22) the last copied
figure will appear.

Note: Redo simply means bringing back the last change.

2.5 Rotate and Flip

Let’s see how can you rotate a figure.

> Select an entire figure. (Fig 2.23)

> Right-click inside the selection box, click rotate and then click Rotate right
90˚. (Fig 2.24)

Fig 2.23

Fig 2.24

20

02- Exploring Paint Computing Wonders

> After clicking the rotate right 90˚ the figure will
rotate. (Fig 2.25)

Let’s see how can you flip a figure.

> Select an entire figure. (Fig 2.26)

> Right-click inside Fig 2.25
the selection box,
click rotate and
then click Flip vertical. (Fig 2.27)

> After clicking the flip vertical, the figure will
flip. (Fig 2.28)

Fig 2.26

Fig 2.27
Fig 2.28

21

02- Exploring Paint Computing Wonders

2.6 Let’s Resize Fig 2.29

To resize an image, follow the following steps:

> Select the figure you want to resize. (Fig 2.29)

> After selection, click resize option in the ribbon. (Fig
2.30)

> A new window will appear. (Fig 2.31)

Fig 2.30 > Change the values in resize tab.
(Fig 2.32)

> Click Okay.

> Image will be resized. (Fig 2.33)

Fig 2.31 Fig 2.32
Fig 2.33
22

02- Exploring Paint Computing Wonders

2.7 Let’s Skew Fig 2.34
Fig 2.35
Skew means to change the direction. In MS Paint you
can change the direction of any figure by using the
skew option. Let’s learn how to change the direction.
> Select the figure you want to skew. (Fig 2.34)
> After selection, click resize option in the ribbon. (Fig
2.35)
> A new window will appear. (Fig 2.31)
> Change the values in the skew tab. (Fig 2.36)
> Click Okay.
> Image will be skewed. (Fig 2.37)

Fig 2.36

Fig 2.37

23

02- Exploring Paint Computing Wonders

Choose the right one!

1. Which software you are using to draw different shapes?

a. MS Word. ☐

b. MS Excel. ☐

c. MS PowerPoint. ☐

d. MS Paint. ☐

2. In the MS Paint interface, where does the title of the document appear?

a. Quick Access Bar. ☐

b. Title Bar. ☐

c. Status Bar. ☐

d. Menu Bar. ☐

3. What is the name of the area where you draw different shapes and

figures?

a. Drawing area. ☐

b. Sketching area. ☐

c. None of the above. ☐

d. All of the above. ☐

4. Where can you find all the options to draw different shapes?

a. Status Bar. ☐

b. Menu Bar. ☐

c. Ribbon. ☐

d. Title Bar. ☐

5. How many types of selections do you have in MS Paint?

a. 1 ☐

b. 2 ☐

c. 3 ☐

d. 4 ☐

24

02- Exploring Paint Computing Wonders

Answer the following!

1. Write the difference between the rectangular selection tool and the free-
form selection tool.

Rectangular Selection Tool Free-form Selection Tool

2. Write the steps to move objects?

3. Write the steps to copy objects?

4. Write the steps to select a part of any figure?

25

02- Exploring Paint Computing Wonders

5. Write the steps to resize the figure?

26

STEM Wonders

0 3S e ct i o n

WRITING MY
FIRST ARTICLE

Students will learn :

1. Components of MS Word
2. Work with text
3. Create a title for your document
4. Create a List

03- Writing my First Article Computing Wonders

3 WRITING MY FIRST ARTICLE

MS Word is a word processor developed by Microsoft that is used to create
documents, letters, reports, and so on. It has advanced features which allow you
to format and edit your files and documents in the most efficient manner.

To open Word and create a new document:

> Click Start
> In the Search programs and files text box, type Word and
press
Enter. The program will appear on the screen.
> Click on Blank document (1)
> Click on the blank page to start typing the text. (2)

Fig 3.1

28

03- Writing my First Article Computing Wonders

3.1 Components of MS Word: Fig 3.2 Minimize Maximize
Close
Quick Title bar
Access
toolbar

Menu
bar

Ribbon

View buttons Zoom

Document Information Blank Page to write on

29

03- Writing my First Article Computing Wonders

Start typing

Starting to type in Microsoft Word is extremely simple. Simply click the white
page, then use your keyboard to text as soon as the cursor begins to flash.

To learn how to write quickly and accurately, you must first understand how to
position your hands on the keyboard. First and foremost, you must use both
hands.

Consider dividing your keyboard into two sections. In this section, you utilize
your left hand. Your left hand is used in the TGB keys and to the left, and your
right hand is used in the YHN and to the right.

Let’s Type the following text in your Word document:

Fig 3.4

30

03- Writing my First Article Computing Wonders

Save your document

You must save a document that you have created on your computer.
To save a document:

> On the File tab, click Save As. (1)
> Double-click This PC to save your document in a folder on your computer.
(2)
> In the Save as window, choose the location where you want to save the
document e.g. Documents > My documents. (3)
> In the File name box, type a name for your document e.g. My cat. (4)
> Click Save. (5)

Fig 3.5

31

03- Writing my First Article Computing Wonders

On the Quick Access Toolbar, press the Save button.

The document will be saved with the same name in its current
location.

To open a file: Fig 3.6

> On the File tab, click Open (1) or press Ctrl+O
> On the Open window, locate your file, (2) click it and
then click Open. (3)

Fig 3.7

32

03- Writing my First Article Computing Wonders
To close a file:

> On the File tab, click Close (1).

Fig 3.8

To exit from word:

> Click Close button (1).

Fig 3.9

33

03- Writing my First Article Computing Wonders

3.2 Work with text

Text Formatting
Formatting text in Microsoft Word refers to controlling how text
appears in your document. This includes the size, color, and font of
the text. It also covers text alignment, spacing, and letter cases.

The first thing you should do is open Microsoft Word:
> Click the Start button.
> Scroll down the sidebar with the applications and click Microsoft Word.

To use the styles Bod, Italic and Underline:

> Select the text you wish to change. (1)

> On the Home tab, in the Font group, click Bold, (2) or Italic, (3) or
Underline.(4)

Fig 3.10

*Before applying any font format, remember to select the text
you want to change.

34

03- Writing my First Article Computing Wonders

Fig 3.11

Fig 3.12

Fig 3.13

35

03- Writing my First Article Computing Wonders

It is possible to highlight certain aspects of your text to stand out.

To highlight text:

> On the Home tab, in the Font group, click the arrow next to the Text
Highlight Color button. (1)
> In the list, click a highlight color e.g. Bright Green (2)
> Select the text that you want to change that will then be highlighted.
(3)

To go back to normal, click Stop
Highlighting.

Fig 3.14

Find text
If your document is large and you need to rapidly locate a word or text, you can
use Find.

To find a word or phrase:

> On the Home tab, in the Editing group, click Find. (1)
> The Navigation task panel will appear. (2)
> In the Search box, type in the desired text e.g. cat. (3)
As you enter text, appropriate word will become highlighted within the
document. (4)

36

03- Writing my First Article Computing Wonders

Fig 3.15

*You can also utilize the keyboard shortcut Ctrl +F to search.

Undo in word
There's no need to worry about making mistakes in Word since you can use Undo
to erase your mistakes. The previous action can be undone. For example, if you
deleted an item, and then
decided that you want to keep it
Undo will make it reappear. For
this, you have to click Undo or
press Ctrl+Z.

Fig 3.16

Zoom in and out
To change the size of text on the screen, select the zoom slider located on the
status bar located in the lower part of the screen press your left mouse click,
and move the slider either to the left or right to zoom out and zoom in.

37

03- Writing my First Article Computing Wonders

Fig 3.17

3.3 Create a title for your document

Your article's title must be engaging and understandable because it is the first
thing readers read. To make it stand out, use some special formatting.

To change the font:

> Select the text you want to modify. (1)
> On the Home tab, in the Font group, click the arrow next to the Font
button. (2)
> Select the font you want to use from the drop-down list, such as
Cooper Black. (3)
> The font will change. (4)

Fig 3.18

38

03- Writing my First Article Computing Wonders

To change the font size:

> Select the text you want to modify. (1)
> On the Home tab, in the Font group, click the arrow next to the Font
Size button. (2)
> Select the font size you want to use from the drop-down list, such as
48. (3)
> The font will change. (4)

Fig 3.19

To change the text alignment:
> Select the text you want to modify. (1)
> On the Home tab, in the Paragraph group, select one of the four
alignment options. (2)

39

03- Writing my First Article Computing Wonders

Fig 3.20

All the selected text is aligned to
the left of the page when you use
Align Left.

Fig 3.21

40

03- Writing my First Article Computing Wonders

All the selected text is aligned to
the center of the page when you
use Center.

Fig 3.22

All the selected text is aligned to
the right of the page when you use
Align Right.

Fig 3.23

41

03- Writing my First Article Computing Wonders

All the selected text is distributed
evenly between the pages when
you use Justify.

Fig 3.24

3.4 Create a List

Bullets and numbers
To make a list, use bullets and numbers.

To make a bullet list:
> On the Home tab, in the Paragraph group, click the arrow next to the
Bullets button. (1)
> In the list, click the Bullet you want to use. (2)
> A bullet will appear on the left. (3)
> To automatically insert another bullet, type a word or phrase and hit
Enter. (4)
> Press Enter twice to complete the list, or press Backspace to remove
the final bullet from the list.

42

03- Writing my First Article Computing Wonders

Fig 3.25

To make a number list:
> On the Home tab, in the Paragraph group, click the arrow next to the
Numbering button. (1)
> In the list, click the Number you want to use. (2)
> A number will appear on the left. (3)
> To automatically insert another number, type a word or phrase and hit
Enter. (4)
> Press Enter twice to complete the list, or press Backspace to remove
the final number from the list.

43

03- Writing my First Article Computing Wonders

Fig 3.26

44

03- Writing my First Article Computing Wonders

Choose the right one!

1. Which software you are using to write your article?

a. MS Word. ☐

b. MS Excel. ☐

c. MS PowerPoint. ☐

d. MS Paint. ☐

2. In the MS Word interface, where does the title of the document appear?

a. Quick Access Bar. ☐

b. Title Bar. ☐

c. Status Bar. ☐

d. Menu Bar. ☐

3. What is the name of the area where you can create a list?

a. Pointers. ☐

b. Bullets and Numbering. ☐

c. None of the above. ☐

d. All of the above. ☐

4. Where can you the option to save your document?

a. Status Bar. ☐

b. Menu Bar. ☐

c. Ribbon. ☐

d. Title Bar. ☐

5. How many types of alignment options do you have in MS Word?

a. 1 ☐

b. 2 ☐

c. 3 ☐

d. 4 ☐

45