# Counting, Reading and Writing Whole Number 11 – 20 (Primary 1)

MATHEMATICS

FIRST TERM

WEEK 7

PRIMARY 1

THEME – WHOLE NUMBERS

PREVIOUS LESSON – Whole Number 10 (Primary 1)

TOPIC – WHOLE NUMBER 10

LEARNING AREA

1. Introductory Activities

2. Count, Read and Write Number 11 – 20

3. Count, Read and Write Number 1 – 20

4. Count, Read and Write Number 1 – 50

PERFORMANCE OBJECTIVES

By the end of the lesson, the pupils should have attained the following objectives (cognitive, affective and psychomotor) and should be able to –

1. identify number 11 – 10.

2. count and read number 11 – 20.

3. relate the counting and writing of number 1 – 9 with number 11 – 20.

4. count and write number 21 – 50 and 50 – 21.

ENTRY BEHAVIOUR

Number 1 – 10

INSTRUCTIONAL MATERIALS

The teacher will teach the lesson with the aid of:

Counters – bottle tops, button, balls, toes and fingers, etc.

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

CONTENT OF THE LESSON

LESSON ONE – READ AND WRITE NUMBER 1 – 10

INTRODUCTORY ACTIVITIES

Teacher’s Activities – Asks the pupils to read and write number 1 – 10.

Pupil’s Activities – Read and write number 1 – 10.

# 1  2  3  4  5  6  7  8  9  10

COUNT AND READ NUMBER 11 – 20

Teacher’s Activities – Displays objects for the pupils to count and write up to 20.

For example,

# ✏️✏️✏️✏️✏️✏️✏️✏️✏️✏️

Pupil’s Activities – 10 pencils

Repeat the counting and writing for number 11 – 20.

# 📏📏📏📏📏📏📏📏📏📏📏

Pupil’s Activities – 11 rulers

Teacher’s remark – 11 balls is 1 group of ten and 1.

1        2       3        4        5        6       7        8       9      10

# ⚽⚽⚽⚽⚽⚽⚽⚽⚽⚽

11     12     13      14      15     16     17      18     19     20

# ⚽⚽⚽⚽⚽⚽⚽⚽⚽⚽

Teacher’s Activities – Leads pupils to recognize that 11 balls is 1 group of ten and 1.

1        2       3        4        5        6       7        8       9      10

11 – 10 + 1

One group and 1

12 – 10 + 2

One group and 2

13 – 10 + 3

One group and 3

14 – 10 + 4

One group and 4

15 – 10 + 5

One group and 5

16 – 10 + 6

One group and 6

17 – 10 + 7

One group and 7

18 – 10 + 8

One group and 8

19 – 10 + 9

One group and 9

20 – 10 + 10

Two group

Teacher’s Activities – Guide pupils to read and write number 11 – 20, starting from 1.

Pupil’s Activities – Read and write number 11 – 20.

1        2       3        4        5        6       7        8       9      10

11     12     13      14      15     16     17      18     19     20

LESSON TWO AND THREE – READ AND WRITE NUMBER 21 – 50/50 – 21

Teacher’s Activities – Guide the pupils to continue reading from 21 – 50 and lead them to identify the ideas of group and digit numbers.

For example,

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

Further Activities on Number 1 – 50

31

Three groups and 1

Three Tens and One Unit

Put 3 and 1 give 31

39

Three groups and 9

Three Tens and Nine Unit

Put 3 and 9 give 39

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. Gives a group of 11 bottle tops, 12 buttons and 13 balls to pupils up to 20 balls.

Pupil’s Activities – Count 11 bottle tops, 12 buttons, 13 objects, 13 balls up to 20 objects.

3. Asks them to group each in tens and keep the remainder by the side.

4. Leads pupils to recognize that 11 bottles is 1 group of ten and 1. This is called eleven (11), 12 buttons is 1 group of ten and 2 buttons (called twelve).

5. Guides pupils to carry pupils to carry out similar activities for 13 balls up to 20 balls. Thus, 11 = 1 ten and 1 unit.

Pupil’s Activities –

• Count values under tens and units (i.e. T and U)
• Write value under T and U.

6. Teacher’s/Pupil’s Activities – Repeat the activities up 50.

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 –

LESSON EVALUATION

Pupils to answer the questions on their workbook.

## WORKBOOK

1. bring ten objects from collection.

# ⚽⚽⚽⚽⚽⚽⚽⚽⚽⚽⚽⚽⚽

2. Count, read and complete the number of objects.

1        __       3        4        __        6       7        8       9      __

# ⚽⚽⚽⚽⚽⚽⚽⚽⚽⚽

11     12     13      __      15     16     __      18     __     20

# ⚽⚽⚽⚽⚽⚽⚽⚽⚽⚽

3. Read and write number 1 – 50.

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

4. Copy and complete the missing numbers.

1          _          3          4          5           _         7          8        _        10

11        12       13        14        15        16       17        18       19      20

__        22       __        24         25        26       27        28       __       30

31        32       33        __         35        36       37        38       39      __

41        42       43        44        __        46       47         __       49      50

5. Read and write 10, 11, 12, 13 up to 20 in T and U.

1 Ten and 0 Unit

1 Ten and 1 unit

1 ___ and 2 ____

1 ___ and 3 ____

1 ___ and 4 ____

Up to 20.

6. Put the following digits together and read numbers formed.

• 1 and 5 = 15
• 1 and 0 =
• 2 and 9 =
• 3 and 0 =
• 4 and 1 =

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