 # Primary 2 Online Materials

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These PowerPoint slides contain teaching materials for Primary 2. It is designed to aid teachers in the delivery of Matrix Math lessons. The slides contain solutions to Matrix Math questions in detailed steps enhanced with Powerpoint animation to help students better understand and grasp complex concepts.

### Who are the slides for?

The slides are specially designed for Matrix Math teachers to deliver lessons effectively and consistently.

### Lesson 1 to 10

1
P2 Lesson 1

This week (Lesson 1), we will begin our 1st lesson for the new academic year.

This week we will focus on the fundamentals of whole numbers. This lesson will be tedious as it involves more computation. This lesson is intended to lay the foundation skills needed for subsequent problem-solving questions under whole numbers.

We aim to train our students early in reasoning skills, analytical skills, and a systematic problem-solving approach.

2
P2 Lesson 2

This week (Lesson 2), we will continue with Whole Numbers 2.

In this lesson, we will focus on math operations involving

> Missing numbers

> Multiplication and divisions

> Place values

3
P2 Lesson 3

This week (Lesson 3), we will continue with Whole Numbers 3.

In this lesson, we will cover

1. Problem sums relating to Part and Whole Concepts.
2. Problem sums involving Ordinal Numbers.

A greater focus will be on Ordinal Numbers as this is new to most Primary 2 students.

4
P2 Lesson 4

This week (Lesson 4), we will continue with Whole Numbers 4.

In this lesson, we will teach the concepts of finding ways of arrangement.

Students will be taught logical thinking skills to arrange groups in different permutations. The concepts covered are

1. Finding the number of ways involving one group
2. Finding the number of ways involving two groups.

This week is the last lesson for 2022. We will like to take this opportunity to wish all parents and students a Merry Christmas and a Happy New Year!

5
P2 Lesson 5

This week (Lesson 5), we will continue with Whole Numbers 5.

In this lesson, we will be focusing on Total Concepts and their variants. Total Concept is a term we coined for Problem Sums involving multiplications and division. Multiplication problem sums can be categorised into 3 types.

1. Total = number of groups x no of items in one group
2. No of groups = Total / no of items in one group
3. No of items in one group = Total / no of groups

The children must understand the different ways "Total Concepts" can be tested. Such exposure will help to minimise careless mistakes and mistakes due to rote learning (memorising steps).

6
P2 Lesson 6

This week, we will be covering Lesson 6, which focuses on Whole Numbers. Specifically, we will be introducing the concept of the supposition method, also known as the assumption method. For Primary 2 students, we will be using diagrams to help illustrate this concept. Please don't worry if your child is initially confused by this material - the goal of this lesson is to simply introduce the concept and encourage children to approach problem-solving in a new way.

In addition to the supposition method, this lesson will also cover three types of "comparison of quantities" questions.

7
P2 Lesson 7

Next week, in Lesson 7, your child will be learning one of the most common problem sums concepts in Primary 2: the concept of comparison by quantity and comparison by units.

These two concepts may seem similar, and it is common for students to confuse them. We have intentionally placed these two concepts in the same lesson to help your child understand the fine difference between them. We believe that by learning these concepts in tandem, your child will have a better understanding and be able to apply them correctly in problem solving.

8
P2 Lesson 8

We wanted to update you on what your child will be learning next week in class. They will be continuing with lesson 8 on whole numbers. As a reminder, this week we covered the concepts of "comparison of quantities" and "comparison of units." Next week, we will be challenging the students by incorporating these concepts into a single question, which is not something typically covered in other schools.

Please do not be too concerned if your child struggles a little with this week's lesson, as it is intended to stretch their understanding. We will also be working on teaching the children how to interpret the sequence of events in a math problem and translate them into numerical statements.

If you have any questions or concerns, please do not hesitate to reach out to the teacher.

9
P2 Lesson 9

This week (Lesson 9) and the next, we will revise all the concepts we have taught. In this revision lesson, we will focus on

1. 4 Operations
2. Part and whole
3. Finding the number of ways
4. Ordinal numbers
5. Total concept

10
P2 Lesson 10

### Lesson 11 to 20

1
P2 Lesson 11
2
P2 Lesson 12

We will cover the topic of Length.

We will be introducing problem sums related to the topic of Length, specifically focusing on Interval Concepts. These types of problem sums are often referred to as "Flag Post" questions. They are an essential concept for students to master, as they will continue to be tested throughout their academic journey, starting from Primary 3 and beyond.

3
P2 Lesson 13

In this week's lesson, we will continue with Length Lesson 3.

The concepts we will cover include:

1. Comparison of quantity, given information on group and difference.
2. Comparison of quantity, given information on total and difference.
3. Comparison of quantity, given information on total and difference of 3 groups.

Concept 2 can be considered a "staple" heuristic concept as it is commonly tested and incorporated in many problem sums. As such, we have provided more practice questions for this concept.

Concept 3 is considered difficult for Primary 2 students. We have pre-drawn the models for this series of questions to help guide the students.

4
P2 Lesson 14

In this week (Lesson 14), we will continue with Length Lesson 4.

The concepts we will cover include

1. Comparison of units

2. Working backwards

3. Properties of squares

5
P2 Lesson 15

This week (Lesson 15), we will begin with Mass Lesson 1.

In this lesson, we will teach the basics of Mass.

2. Comparing and ordering of Mass

3. Comparing objects in terms of Mass

Although this series of questions are considered basic Mass concepts, they are commonly tested based on our analysis of past year school papers.

6
P2 Lesson 16

This week (Lesson 16), we will continue with Mass lesson 2.

This lesson will be about the comparison of mass. The questions in this lesson are graphical and are intended to train the students' reasoning skills.

7
P2 Lesson 17
8
P2 Lesson 18
9
P2 Lesson 19
10
P2 Lesson 20

### Lesson 21 to 30

1
P2 Lesson 21
2
P2 Lesson 22
3
P2 Lesson 23
4
P2 Lesson 24
5
P2 Lesson 25
6
P2 Lesson 26

This week (Lesson 26), we will continue with “Money 4”.

In this lesson, we will revise what was taught in the past three lessons.

7
P2 Lesson 27

This week (Lesson 27), we will continue with “Numbers to 40”

This week we will be revisiting the concept of “before, change, after”. We will be covering 3 variations of such problem sums:

1. Find Before (Working backwards)
2. Find After (Working forward)
3. Find Change

8
P2 Lesson 28

This week (Lesson 28), we will begin with a new topic, “Fractions”.

In this lesson, we will cover the basics of fractions.

1. Identifying fractions
2. Showing fractions in figures
3. Complete fractions in figures
4. Basic application of fractions as part of a whole
5. Comparing and ordering fractions
6. Addition and subtraction of fractions

9
P2 Lesson 29

This week (Lesson 29), we will continue with Fractions 2.

In this lesson, we will be applying fractions in problem sums. Fractions involving "Part and Whole" are among the most commonly tested types of fraction questions in Primary 2. There are a few ways "Part and Whole" can be tested. They are as follows:

> Find part

> Find total parts.

> Find a part of another part

> Find the difference between 2 parts

10
P2 Lesson 30

This week (Lesson 30), we will continue with Fractions 3.

In this lesson, we will introduce Fractions as part of a whole with further cutting.

This concept will prepare the children for Fractions with common denominators, which will be taught in P3.

### Lesson 31 to 40

1
P2 Lesson 31

This week (Lesson 31), we will begin with a new Topic, “Graphs”.

The objectives of this lesson are

1. Read and understand data from a table.

2. How to systematically approach Graph questions to minimise confusion and careless mistakes.

2
P2 Lesson 32

In this lesson (Lesson 32) and the following two lessons, we will revise all the concepts we have taught since June. In this revision lesson, we will focus on:

1. 4 operations
2. Problem sums involving multiplications and division
3. Problem sums involving measurements.
4. Comparison model involving quantity and units differences.

Regards

Jason

3
P2 Lesson 33

This week (Lesson 33), we will continue to revise previously taught concepts. The focus will be on heuristics problem sums involving Money.

4
P2 Lesson 34

This week (Lesson 34), we will continue to revise previously taught concepts. We will be covering:

1. Fractions
2. Geometry
3. Money
4. Number patterns

5
P2 Lesson 35

This week (Lesson 35), we will begin with a new topic - Time. In this lesson, we will be covering basic and introductory concepts. This will include:

2. Addition and subtraction of time duration
3. Timeline to represent adding/subtracting duration to/from time.
4. Problem sums involving working forward with time.

6
P2 Lesson 36

This week (Lesson 36), we will continue with Time lesson 2. In this lesson, we will cover:

1. Working backwards with time.

2. Problem sums involving finding time duration.

3. Problem sums involving faulty clock and incorrect time.

Concept 3 can be pretty tricky for many students. To help students understand the questions, drawing a timeline will be necessary. We will teach the students to use a timeline to solve problems-sums involving time.

7
P2 Lesson 37

This week (Lesson 37), we will start on a new topic - Volume.

In this lesson, we will cover the following basic concepts:

1. Concept of litres (L) and millilitres (ml).

2. Additions and subtractions involving L and ml.

3. Problem sums involving Total Concepts.

8
P2 Lesson 38

This week (Lesson 38), we will expose the children to higher order volume problem sums involving Total Concept.

For the first half of the lesson, we have made the questions slightly less daunting by including graphic aids to help the children understand the questions better.

9
P2 Lesson 39

This week (Lesson 39), we will continue to work with the children on higher-order problem sums involving Volume.

The concepts we will cover are:

1. Total concept
2. Grouping, consider the remainder
3. Comparison of units

10
P2 Lesson 40

This week (Lesson 40), we will continue to work with the children on higher-order problem sums involving Volume.

The concepts we will cover are:

1. Working forward
2. Working backwards
3. Finding change

### Lesson 41 to 50

1
P2 Lesson 41

This week (Lesson 41), we will begin revising and preparing for the year-end exams. Typically, we prepare our students with "Select Papers". Select Papers is a compilation of carefully curated, commonly tested concepts across all schools. This lesson will cover a wide range of concepts and topics. Similarly, Lesson 41's Additional Practice paper is also designed to prepare the children for SA2.

2
P2 Lesson 42

This week (Lesson 42), we will continue with the revision of previously taught topics and concepts.

The topics and concepts we will cover are:

1. Graphs
2. Time
3. Volume
4. Mass
5. Money
6. Fractions
7. Whole numbers
8. Measurements

3
P2 Lesson 43

This week (Lesson 43), we will continue preparing for SA2 with Select 13. It is also essential that the children attempt the prescribed homework. The questions in the additional practice papers are integral to the preparation system. The primary and additional practice papers are designed to prepare the children for the final year exams.

4
P2 Lesson 44

This week (Lesson 44), we will continue preparing for SA2 with Select 14. It is also essential that the children attempt the prescribed homework. The questions in the Additional Practice papers are integral to the preparation system. The main and Additional Practice papers are designed to prepare the children for the final year exams.

5
P2 Lesson 45

This week (Lesson 45), we will continue preparing for SA2 with Select 15. It is also essential that the children attempt the prescribed homework. The questions in the Additional Practice papers are integral to the preparation system. The Main and Additional Practice papers are designed to prepare the children for the final year exams.

6
P2 Lesson 46

This week (Lesson 46), will be the last Select Paper for the academic year 2022.

In the next 3 weeks, we will summarise the learnings of 2022 with the students.

7
P2 Lesson 47

This week (Lesson 47), we will begin the first three lessons on “summary of concepts”.

As shared in the previous message, these three lessons will summarise the key problem sums concepts that will bridge the student to the next academic year.

8
P2 Lesson 48

This week (Lesson 48), we will continue with the second of three lessons on “summary of concepts”.

As shared in the previous message, these three lessons will summarise the key problem sums concepts that will bridge the student to the next academic year.

9
P2 Lesson 49

This lesson (Lesson 49), will be the final lesson for 2022 academic year. Next week we will begin with the Primary 2 syllabus.

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