Maths 2B - GoGuru · 15 Time Lesson 1 Reading and Writing Time 98 Lesson 2 Learning a.m. and p.m....

Maths 2B3rd Edition

Pupil’s Book

Dr Fong Ho Kheong • Chelvi Ramakrishnan • Michelle Choo

Maths 2B3rd Edition

Dr Fong Ho Kheong • Chelvi Ramakrishnan • Michelle Choo

•AP

PRO

VE

DBY MINISTRY OF EDUCATIO

N•

for use from 2014–2018

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PrefaceMy Pals Are Here! Maths (3rd Edition) is a comprehensive, task-based and learner-centred programme designed to provide pupils with a solid foundation in mathematics and opportunities to become efficient problem solvers.

My Pals Are Here! Maths (3rd Edition) continues to make learning mathematics fun and rewarding through the use of engaging illustrations, photographs, hands-on activities and games that help reinforce and consolidate learning for pupils of different abilities.

Lessons 1 ReadingandWritingTime

2 Learninga.m.andp.m.

3 TimeTakeninHoursandMinutes

Time15Chapter

Whattimewillit

be1hlater?

It’stoohotnow.

Let’splayanhourlater.Let’splaysoccer.

Big Idea

the time of day can be

shown in different ways.

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Put on Your Thinking Cap!Put on Your Thinking Cap!This is a tangram.It is a square made up of seven pieces.

Put this tangram on a sheet of paper.Cut along the lines like this:

Now, mix up the pieces.

Put them back into the original shape of a square.

72 Chapter 13 Two-Dimensional and Three-Dimensional Figures


7/25/13 2:53 PM

Use poems, stories and scenarios pupils can relate to in the chapter openers to capture their interest, provide an engaging introduction to the topics and jump-start learning.

NEW!

Introduce concepts through short tasks that involve the use of manipulatives and other concrete materials in Learn. At the end of each task, pose thought-provoking questions to help develop pupils’ creative and critical thinking skills.

NEW!

Carry out Hands-on Activity to promote active and collaborative learning. Where possible, pupils will complete station-based activities in rotating groups to best utilise class time.

For the Teacher:

Challenge pupils to solve non-routine questions by applying relevant heuristics and thinking skills in Put on Your Thinking Cap!

The minute hand takes 60 minutes to move around the clock once.The hour hand takes 1 hour to move from 10 to 11.

There are 60 minutes in 1 hour .

Lesson

1 Reading and Writing TimeLearn Skip-counting by 5 to tell time Take a .

Point the shorter hand at 7 and the longer hand at 3. How many minutes have passed after 7 o’clock?

minute handhour hand

98 Chapter 15 Time


8/1/13 3:14 PM

Hands-on ActivityWork in groups.1 Find a picture from the Internet.

Example of a picture

Count the flowers of each colour in the picture obtained from

the Internet. Record your data.

Red Yellow Purple Pink 16

2 Use to make the picture graph.

Types of Flowers

Each stands for flowers.

Pink

Purple

Yellow

Red

3 Make a story about the flowers using the information from the graph.

Can you show the picture graph in a different way?

120 Chapter 16 Picture Graphs



8/1/13 3:16 PM

(M)MPaHMathTB2B_Preface.indd 2 8/19/13 10:44 AM

Maths Sharing

Work in pairs.

Which unit (g, kg) would you use for each item? Why?

a b

apple school bag

Try out a recipe with your child. Get him/her to measure the mass of the required ingredients

using the kitchen scale.

4

tissue box cereal cookies

Arrange the items from heaviest to lightest.

, , heaviest

What is the mass of your school bag?

Workbook B: Practice 3,pages 19 – 28

Workbook B:

pages 19 – 28

21 Lesson 3 Measuring in Grams

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Let’s Explore!

Work in pairs.

Look around your school.

Find two objects that have these solids.

a cube b cuboid c cone

d cylinder e sphere

Share your fi ndings with your class.

Example

tissue box

The tissue box is a cuboid.

I can make the letter ‘L’

using a cuboid and a cube.

Learn Building fi gures with solids

Take a cuboid and a cube.

Form a fi gure using these two solids.

using a cuboid and a cube.

59 Lesson 2 Solids and Three-Dimensional Figures


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Make mathematics come alive by using the tips found in to apply mathematical concepts to everyday scenarios in and around the home.

Share your thoughts with your teachers, create your own mathematics questions and become aware of your own mathematical thinking in Maths Sharing!

Enjoy learning mathematics with My Pals Are Here! Maths (3rd Edition)!

Perform investigative activities with Let’s Explore!

For the Pupil:

For the Parent/Guardian:

Discover exciting and interesting ways to have fun learning mathematics with Game!

Hands-on ActivityWork in groups.1 Find a picture from the Internet.

Example of a picture

Count the flowers of each colour in the picture obtained from

the Internet. Record your data.

Red Yellow Purple Pink 16

2 Use to make the picture graph.

Types of Flowers

Each stands for flowers.

Pink

Purple

Yellow

Red

3 Make a story about the flowers using the information from the graph.

Can you show the picture graph in a different way?




8/1/13 3:16 PM

Game

1 Hold facingdown. Yourpartnerholds facingdown.2 Taketurnstoflipoveronecardandcomparethefractionsonthecards.Theplayerwhogivesthecorrectanswerfirstkeepsthecardsonthetable.

3 Repeat 2 untiloneofyouhavenomorecardsleft.Theplayerwithmorecardswins.

Players: 2You need:• and

(unitfractionsonly)

Workbook B: Practice 3, pages 109–116

12 isgreaterthan 1

3 .

89

Lesson 3 Comparing and Ordering Fractions


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6 Subtract. a 9

10 – 310 = b 7

11 – 411 = c 1 – 7

12 =

Maths Sharing1 Look at the picture.

Use fractions to tell a story to your friend.2 Make an addition story and a subtraction story using fractions.

Use to show the addition and subtraction of fractions. ExampleBingxiang had 5

8 of a cake. He gave 2

8 of the cake to Julie. 5

8 – 28 = 3

8 He had 3

8 of the cake left.

Workbook B: Practice 4, pages 117–124

Workbook B:

pages 117–12494 Chapter 14 Fractions


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(M)MPaHMathTB2B_Preface.indd 3 8/19/13 10:44 AM

10 Two-StepWordProblems:AdditionandSubtraction

Lesson1 Two-StepWordProblems 3

11 Mass Lesson1 GettingtoKnowMass 11 Lesson2 MeasuringinKilograms 14 Lesson3 MeasuringinGrams 19 Lesson4 AdditionandSubtractionofMasses 22 Lesson5 MultiplicationandDivisionofMasses 25

12 Money Lesson1 CountingDollarsandCents 31 Lesson2 ChangingCentsandDollars 34 Lesson3 ComparingAmountsofMoney 36 Lesson4 WordProblems 38

13 Two-Dimensionaland Three-DimensionalFigures Lesson1 ShapesandTwo-DimensionalFigures 46

Lesson2 SolidsandThree-DimensionalFigures 55 Lesson3 MakingPatterns 62

14 Fractions Lesson1 UnderstandingFractions 75 Lesson2 MoreFractions 81 Lesson3 ComparingandOrderingFractions 84 Lesson4 AdditionandSubtractionofLikeFractions 90

CONTENTS

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15 Time Lesson1 ReadingandWritingTime 98 Lesson2 Learninga.m.andp.m. 103 Lesson3 TimeTakeninHoursandMinutes 105

16 PictureGraphs Lesson1 ReadingPictureGraphswithScales 112

17 Volume Lesson1 GettingtoKnowVolume 126

Lesson2 MeasuringinLitres 130 Lesson3 AdditionandSubtractionofVolumes 134 Lesson4 MultiplicationandDivisionofVolumes 137

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Lesson

10Chapter

Big Idea

1 Two-Step Word Problems

Two-Step Word Problems: Addition and Subtraction

We are going to buy two tickets with a $50 note. How much change will we receive?

$12 + $12 = $24

$50 – $24 = $26

two-step addition and subtraction word problems can be solved using models.

?

$12 $12

$50

?

$24

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Learn Solving two-step word problemsTake some . Ask your partner to take 13 more than you did.How many cubes do you and your partner have altogether?

Lesson

1 Two-Step Word Problems

There are 26 boys and 19 girls in a class.How many children are there in the class?

26

?

19

26 + 19 = 45

There are 45 children in the class.

Then, 7 children leave the class.How many children are there in the class now?

?

45

7

45 − 7 = 38

There are 38 children in the class now.

Check!45 – 19 = 2645 – 26 = 19

The answer is correct.

Check!38 + 7 = 45

The answer is correct.

3 Lesson 1 Two-Step Word Problems


Mr Fong has 24 black markers.After buying another 12 red markers, Mr Fong has 14 markers more than Miss Chua.

a How many markers does Mr Fong have altogether?

24

?

12

24 + 12 = 36

Mr Fong has 36 markers altogether.

b How many markers does Miss Chua have?

Mr Fong

Miss Chua

36

? 14

36 − 14 = 22

Miss Chua has 22 markers.

First, fi nd the number of markers Mr Fong has altogether.

Who has more markers, Mr Fong or Miss Chua?

4 Chapter 10 Two-Step Word Problems: Addition and Subtraction


Weibang has 88 m of cloth.After using 15 m to make a dress, Weibang has 19 m of cloth less than Carine.How much cloth does Carine have?

15

88

?

88 – 15 = 73

Weibang has 73 m of cloth left.

Weibang

Carine

?

73 19

73 + 19 = 92 Carine has 92 m of cloth.

First, fi nd the length of cloth Weibang has left.

5 Lesson 1 Two-Step Word Problems


1 There are 22 boys and 16 girls in Vicky’s class.There are 5 more children in Joshua’s class than in Vicky’s class.

a How many children are there in Vicky’s class?

b How many children are there in Joshua’s class?

a

?

=

There are children in Vicky’s class.

b

Joshua

Vicky

?

=

There are children in Joshua’s class.

Are there more or fewer children in Vicky’s class?

6 Chapter 10 Two-Step Word Problems: Addition and Subtraction


Maths 2B - GoGuru · 15 Time Lesson 1 Reading and Writing Time 98 Lesson 2 Learning a.m. and p.m....

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