# Counting Numbers 1 – 180 and Skip Counting in 2s, 3s, 5s and 10s | Addition of Two Whole Numbers with Sum not More than 50 Primary 1 (Basic 1) Term 3 Week 2 Mathematics

### MATHEMATICS

THIRD TERM

WEEK 2

PRIMARY 1

THEME – WHOLE NUMBERS

PREVIOUS LESSON – Counting of Whole Numbers 1 – 170 and Addition of Numbers not More than 20 Primary 1 (Basic 1) Term 3 Week 1 Mathematics

### LEARNING AREA

1. Introductory Activities

2. Identification and Reading of Numbers 1 – 180

3. Writing of Numbers 1 – 180

4. Add and Count  in 2s, 3s to 10s

5. Lesson Evaluation and Weekly Assessment

### LEARNING OBJECTIVES

By the end of the lesson, most of the pupils should have attained the following objectives –

1. identify and read correctly the numbers 1 – 180.

2. write correctly the numbers 1 – 180.

3. count in 2s, 3s to 10s

4. adding two whole numbers with sum not more 50.

### ENTRY BEHAVIOUR

The pupils can count 1 – 170 correctly and add two whole numbers with sum not more than 20.

### INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of flashcards and number charts.

### METHOD OF TEACHING

Choose a suitable and appropriate methods for the lessons.

Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons.

### REFERENCE MATERIALS

1. Scheme of Work

2. 9 – Years Basic Education Curriculum

3. Course Book

4. All Relevant Material

5. Online Information

### LESSON 1 – INTRODUCTION

ACTIVITY 1 – COUNTING NUMBER 1 – 100

1     2     3     4     5     6     7     8     9    10

11   12   13   14   15   16   17   18   19  20

21   22   23   24   25   26   27   28   29  30

31   32   33   34   35   36   37   38   39  40

41   42   43   44   45   46   47   48   49  50

51   52   53   54   55   56   57   58   59  60

61   62   63   64   65   66   67   68   69  70

71   72   73   74   75   76   77   78   79  80

81   82   83   84   85   86   87   88   89  90

91   92   93   94   95   96   97   98   99  100

ACTIVITY 2 – COUNTING NUMBER 101 – 170

101  102  103  104  105  106  107  108  109  110

111  122  123  124  125  126  127  128  129  120

121  122  123  124  125  126  127  128  129  130

131  132  133  134  135  136  137  138  139  140

141  142  143  144  145  146  147  148  149  150

151  152  153  154  155  156  157  158  159  150

161  162  163  164  165  166  167  168  169  170, up to 190

ACTIVITY 3 – IDENTIFICATION AND WRITING 1 – 170

Teacher displays a chart showing number 1 – 170 for children to identify and write.

ACTIVITY 4 – ORAL EXERCISE

Teacher displays chart showing the numbers below for children to identify and fill the missing numbers.

• 101  102  ___ 104  105  ___ 107  108  ___ 110
• ___ 122  123  124  125  ___ 127  128  129 ___
• 121  122  ___ 124  ___ 126  ___ 128  129  130
• 131  132  133  134  ___ 136  ___ 138  139 ___
• 141  ___ 143  144  ___ 146  147  ___ 149  150
• 151  152  153  154  155  156  157  ___ ___ ___
• 161  ___ 163  164  165  ___ 167  168  169 ___

### LESSON 2 – ADD AND COUNT IN 2s AND 3s

ACTIVITY 1 – SKIP COUNT IN 2s

Count in 2s

2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26,

28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50.

2

2 + 2 = 4

4 + 2 = 6

6 + 2 = 8

8 + 2 = 10

10 + 2 = 12

12 + 2 = 14

14 + 2 = 16

16 + 2 = 18

18 + 2 = 20, etc. up to 50.

ACTIVITY 2 – SKIP COUNT IN 3s

Count in 3s

3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48

3

3 + 3 = 6

6 + 3 = 9

9 +12 = 12

12 + 3 = 15

15 + 3 = 18

18 + 3 = 21

21 + 3 = 24

24 + 3 = 27

27 + 3 = 30, etc. not more than 50.

ACTIVITY 3 – ADD AND COUNT EXERCISE

1. Add and count in 2s starting from 2 to 20.

2. Add and count in 2s starting from 5 to 21.

3. Add and count in 3s starting 3 to 24.

4. Add and count in 3s starting from 5 to 29.

1. Add and count in 2s starting from 2 to 20.

2

2 + 2 = 4

4 + 2 = 6

6 + 2 = 8

8 + 2 = 10

10 + 2 = 12

12 + 2 = 14

14 + 2 = 16

16 + 2 = 18

18 + 2 = 20

Count in 2

2, 4, 6, 8, 9, 10, 12, 14, 16, 18, 20

2. Add and count in 2s starting from 5 to 21.

5

5 + 2 = 7

7 + 2 = 9

9 + 2 = 11

11 + 2 = 13

13 + 2 = 15

15 + 2 = 17

17 + 2 = 19

19 + 2 = 21

3. Add and count in 3s starting 3 to 24.

3

3 + 3 = 6

6 + 3 = 9

9 + 3 = 12

12 + 3 = 15

15 + 3 = 15

15 + 3 = 18

18 + 3 = 21

21 + 3 = 25

Count in 3s

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

4. Add and count in 3s starting from 5 to 29.

5

5 + 3 = 8

8 + 3 = 11

11 + 3 = 14

14 + 3 = 17

17 + 3 = 20

20 + 3 = 23

23 + 3 = 26

26 + 6 = 29

Count in 3s

5, 8, 11, 14, 17, 20, 23, 26, 29

### LESSON 3 – ADD AND COUNT IN 5s AND 10s

ACTIVITY 1 – SKIP COUNT IN 5s

Counting in 5s

Starting from 5 to 50

5, 10, 15, 25, 30, 35, 40, 45, 50, 55, 50

Starting from 10 to 50

10, 15, 20, 25, 30, 35, 40, 45, 50

Starting from 11 to 56

11, 16, 21, 26, 31, 36, 41, 46, 51, 56

5

5 + 5 = 10

10 + 5 = 15

15 + 5 = 20

20 + 5 = 30

30 + 5 = 35

35 + 5 = 40

40 + 5 = 50

ACTIVITY 2 – ADD AND COUNT IN 10s

Count in 10s

Starring from 10 to 100

10, 20, 30, 40, 50, 60, 70, 80, 90, 100

Starting from 5 to 95

5, 15, 25, 25, 35, 45, 55, 65, 75, 85, 95

Starting from 20 to 100

20, 30, 40, 50, 60, 70, 80, 90, 100

10

10 + 10 = 20

20 + 10 = 30

30 + 10 = 40

40 + 10 = 50

ACTIVITY 3 – ADD AND COUNT EXERCISE

1. Add and count in 5s starting from 5 to 30.

2. Add and count in 5s starting from 12 to 52.

3. Add and count in 10s starting 10 to 50.

4. Add and count in 10s starting from 5 to 50.

1. Add and count in 5s starting from 5 to 30.

5

5 + 5 = 10

10 + 5 = 15

15 + 5 = 20

20 + 5 = 30

That’s, 5, 10, 15, 20, 25, 30.

2. Add and count in 5s starting from 12 to 32.

12

12 + 5 = 17

17 + 5 = 22

22 + 5 = 27

27 + 5 = 32

Count in 5

12, 17, 22, 27, 32.

3. Add and count in 10s starting 10 to 50.

10

10 + 10 = 20

20 + 10 = 30

30 + 10 = 40

40 + 10 = 50

Count in 10s

10, 20, 30, 40, 50.

4. Add and count in 10s starting from 5 to 105.

5

5 + 10 = 15

15 + 10 = 25

25 + 10 = 35

35 + 10 = 45

Count in 10s

15, 25, 35, 45, 55.

LESSON 4 – REVISION ON SKIP COUNT IN 2s AND 3s

LESSON 5 – REVISION ON SKIP COUNT IN 5s AND 10s

### PRESENTATION

To deliver the lesson, the teacher adopts the following steps:

1. To introduce the lesson, the teacher revises the previous lesson. Based on this, he/she asks the pupils some questions;

2. Teacher uses flashcards and number chart to lead a counting from 1 – 180 with appropriate lesson evaluation.

Pupil’s Activities – Pay attention to the lesson introduction and follow the teacher’s lead to identify and count numbers.

3. Teacher displays number charts showing count in 2s, 3s, 5s and 10s.

Pupil’s Activities – Examine and identify the missing numbers.

4. Teacher uses the number charts to introduce the lesson and guide the children to skip count correctly in 2s, 3s, 5s and 10s.

5. Teacher uses the activities in step 4 to guide pupils to add and count in 2s, 3s, 5s and 10s.

Pupil’s Activities – Follow the teacher’s guides to add and count in 2s, 3s, 5s and 10s.

6. Teacher summarizes the lesson by leading a add and count 2s, 3s, 5s and 10s.

Pupil’s Activities – Participate actively in add and count 2s, 3s, 5s and 10s and write as instructed.

### CONCLUSION

To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.

### NEXT LESSON

Counting Numbers 1 – 180 and Skip Count in 2s and 3s | Addition and Subtraction of Whole Numbers Primary 1 (Basic 1) Term 3 Week 3 Mathematics