Multiplication of 2 digit numbers by 2 or 3 without remaining or exchanging. Skip counting of numbers in 2s, 3s, 5s, and 10s.

Subject: Mathematics

Class: Basic 2

Duration: 1 Hour

Topic:

Skip Counting in 2s, 3s, 5s and 10s

Multiplication of 2–digit Numbers by 2 or 3 (without exchanging)

Instructional Materials

Number chart, flash cards, chalkboard, counters or bottle tops, chart showing skip counting.

Behavioural Objectives

At the end of the lesson, pupils should be able to:

Count numbers in 2s, 3s, 5s and 10s correctly.

Identify patterns in skip counting.

Multiply 2–digit numbers by 2 or 3 without exchanging.

Solve simple multiplication problems correctly.

Entry Behaviour

Pupils already know how to:

Count numbers.

Add numbers using repeated addition

Introduction:

The teacher begins by asking pupils to count from 1 to 20.

Teacher asks questions such as:

What comes after 2?

What comes after 5?

CONTENT 

Meaning of skip counting means counting by jumping numbers.

Example:

Counting in 2s

2, 4, 6, 8, 10, 12, 14, 16, 18, 20

Counting in 3s

3, 6, 9, 12, 15, 18, 21, 24, 27, 30

Counting in 5s

5, 10, 15, 20, 25, 30, 35, 40

Counting in 10s

10, 20, 30, 40, 50, 60, 70, 80

Teacher writes the numbers on the board and pupils read aloud.

Teacher explains that skip counting helps us to multiply numbers easily.

LESSON 2: Multiplication of 2-Digit Numbers by 2 or 3 

 multiplication means repeated addition.

Example 1:

12 × 2

12 + 12 = 24

Therefore, 12 × 2 = 24

Example 2:

14 × 2

14 + 14 = 28

Therefore, 14 × 2 = 28

Example 3:

11 × 3

11 + 11 + 11 = 33

Therefore, 11 × 3 = 33

Example 4:

13 × 3

13 + 13 + 13 = 39

Therefore, 13 × 3 = 39

Teacher gives more examples on the board and pupils solve them.

Class fun

Teacher asks pupils to solve:

10 × 2 = ____

12 × 2 = ____

15 × 2 = ____

11 × 3 = ____

14 × 3 = ____

Evaluation

Teacher asks the following questions:

Count in 2s from 2 to 20.

Count in 5s from 5 to 40.

13 × 2 = ____

12 × 3 = ____

16 × 2 = ____