Pelangi Primary Education Smart Plus Computing Science P2 TextBook samplebook

BBRC2250_ComputingScienceP2_Final_CTP.pdf

1

23/12/2562 BE

12:36

BBRC2250

Literacy Skills

Communication Collaboration Critical Thinking Creativity

C

Primary Education Smart+

Information Literacy Media Literacy Technology Literacy

Learning Skills

M

Y

CM

MY

This series helps you to understand and apply computational thinking to solve daily problems in an orderly and systematic way.

CY

CMY

There are four parts in each book in this series: Solving daily problems using logical thinking and computational thinking Coding or writing simple computer programs

Prathomsuksa 2

K

Using ICT to collect, process and present data Evaluating information found online and using ICT safely

Based on the Basic Education Curriculum B.E. 2551 (Revised Edition B.E. 2560)

BBRC2250

885-87220-0312-8

8 858722 003128

885-87220-0312-8 First Published 2563

All rights reserved. No part of this publication may be reproduced, stored in any retrieval system or transmitted in any form or by any means without prior permission of Pelangi Publishing (Thailand) Co., Ltd. 2020

2019.13.01_01 CT Guide TittlePage_P1-6.indd 2

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Special features Extra relevant information helps in understanding the topic better.

Video-based information engages viewers and enhances learning experience.

Game-based learning incorporates problem solving and critical thinking skills.

Higher-order questions promote critical thinking skills.

Collaborative activities encourage students to learn from each other and foster teamwork.

Solving puzzles and brain-teasers helps to develop problem-solving skills and boost logical thinking.

?

A summary helps students to identify the main ideas of the topic.

More practices enable students to reinforce their understanding of the topic.

Contents

ii

Chapter 1 Solving simple problems

1

Chapter 2 Computer programming

25

Chapter 3 Application software

45

Chapter 4 Proper use of computers

60

Let’s Play

71

Computing Science Prathomsuksa

2

Chapter

1

Solving simple problems

We face problems every day.

Some can be solved easily but others can be quite a challenge.

‘These words are too long.

How can I memorize them by tomorrow?’

‘I want to eat omelet. I have eggs, but how do I cook them?’

We can use the trial and error method and the step-by-step method to solve some of the problems.

Trial and error Have you played jigsaw puzzles before?

A jigsaw puzzle has many different-shaped pieces of cardboard. We can fit these pieces of cardboard together to form a picture.

Do you always manage to assemble a jigsaw puzzle? How did you manage to do so? Are there any specific methods?

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Computing Science Prathomsuksa

2

There are many types of jigsaw puzzles. Some have puzzle pieces that are just rectangles or squares.

1 Arrange the puzzle pieces to form a picture of a cow. Write the matching letters in the puzzle pieces. You may refer to the picture guide.

Picture guide

A

B

C

D

E

F

Tell the class how you solved this puzzle. Is it too easy? Let’s try the next picture.

Chapter 1

Solving simple problems

3

Picture guide

A

B

C

D

E

F

G

H

I

Tell the class how you solved this puzzle.

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Computing Science Prathomsuksa

2

How do you solve a jigsaw puzzle?

We can use the trial and error method. We choose two puzzle pieces and put them together. Do they match? If not, then we may need to put them together in other ways. For example,

Do they match? ( )

Do they match? ( )

Do they match? ( )

Do they match? ( )

We can repeat this method with other puzzle pieces. Always refer to the picture guide if given.

Chapter 1

Solving simple problems

5

Some jigsaw puzzles are not rectangles or squares. Try the next activity.

2 Arrange the puzzle pieces to form a picture of a badger. Write the matching letters in the boxes. You may refer to the picture guide.

Picture guide

B

A

C

D

E F

G

H

Tell your class how you managed to solve this puzzle. Is this activity easier or more difficult?

6

Computing Science Prathomsuksa

2

For the previous activity, we can match the puzzle pieces to the outline of the picture.

We can also refer to the picture guide. For example, based on the picture guide, the eyes of the badger are at the left of the picture.

Picture guide

So, we can look for the ‘eye’ puzzle piece and place it there. Is this puzzle easier than the previous one? Why?

Chapter 1

Solving simple problems

7

3 Turn to page 75. Cut the puzzle pieces out. Paste them below to make a picture of a tortoise. One piece is done for you. You may refer to the picture guide.

Picture guide

! Be careful when using the scissors.

There are some puzzles that have pieces that can interlock with each other perfectly.

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Computing Science Prathomsuksa

2

4 Turn to page 77. Cut out the puzzle pieces. Assemble and paste them in the picture frame below.

! Be careful when using the scissors.

How did you solve it? Discuss with your classmates.

Will it be harder if the frame of the picture is not given? Why?

Chapter 1

Solving simple problems

9

For jigsaw puzzles with interlocking pieces, we can separate the corner and edge pieces from the rest of the puzzle pieces.

Corner pieces

Edge pieces

The rest

Then, we begin by placing the correct corner pieces at the four corners of its picture frame. Use the picture or color of the picture frame as a guide.

Later, place the correct edge pieces. Make sure the colors of the puzzle pieces match with each other and with the picture frame.

10

Computing Science Prathomsuksa

2

BBRC2250_ComputingScienceP2_Final_CTP.pdf

1

23/12/2562 BE

12:36

BBRC2250

Literacy Skills

Communication Collaboration Critical Thinking Creativity

C

Primary Education Smart+

Information Literacy Media Literacy Technology Literacy

Learning Skills

M

Y

CM

MY

This series helps you to understand and apply computational thinking to solve daily problems in an orderly and systematic way.

CY

CMY

There are four parts in each book in this series: Solving daily problems using logical thinking and computational thinking Coding or writing simple computer programs

Prathomsuksa 2

K

Using ICT to collect, process and present data Evaluating information found online and using ICT safely

Based on the Basic Education Curriculum B.E. 2551 (Revised Edition B.E. 2560)

BBRC2250

885-87220-0312-8

8 858722 003128