Odd Even and Prime Numbers Mathematics Primary 2 Second Term Lesson Notes Week 9

Mathematics Primary 2 Second Term Lesson Notes – Week 9

Subject: Mathematics

Class: Primary 2

Term: Second Term

Week: 9

Age: 7-8 years

Topic: Theory of Numbers

Sub-topic: Odd Numbers, Even Numbers, and Prime Numbers

Duration: 40 minutes

Behavioural Objectives

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

1. Identify odd numbers, even numbers, and prime numbers.
2. Differentiate between odd and even numbers.
3. List the first 10 odd, even, and prime numbers.
4. Solve simple problems involving odd, even, and prime numbers.

Keywords

Odd numbers, even numbers, prime numbers, divisible, factors.

Set Induction

The teacher shows a bag of marbles and asks pupils to share them equally into two groups. Pupils will observe whether all the marbles are shared equally or if one remains unshared.

Entry Behaviour

Pupils can count numbers and group objects.

Learning Resources and Materials

• Flashcards with numbers.
• Counters (e.g., bottle caps or sticks).
• Number chart.

Building Background/Connection to Prior Knowledge

The teacher reminds pupils of the concept of counting and grouping numbers.

Embedded Core Skills

• Problem-solving.
• Critical thinking.
• Collaboration and teamwork.

Learning Materials

• Counters for counting.
• Worksheets with numbers.
• Number charts.

Reference Books

• Lagos State Scheme of Work.
• New Method Mathematics for Primary Schools.

Instructional Materials

• Whiteboard and marker.
• Flashcards.
• Number chart.

Content

Definition and Explanation

1. Odd Numbers:
   • Numbers that cannot be divided equally into two groups.
   • Examples: 1, 3, 5, 7, 9, 11, etc.
2. Even Numbers:
   • Numbers that can be divided equally into two groups.
   • Examples: 2, 4, 6, 8, 10, 12, etc.
3. Prime Numbers:
   • Numbers greater than 1 that have only two factors: 1 and the number itself.
   • Examples: 2, 3, 5, 7, 11, 13, etc.

Examples

1. Is 4 odd or even?
   • Answer: Even (it can be divided equally into two groups).
2. Is 9 a prime number?
   • Answer: No (it has factors 1, 3, and 9).
3. List the first five odd numbers.
   • Answer: 1, 3, 5, 7, 9.
4. List the first five even numbers.
   • Answer: 2, 4, 6, 8, 10.
5. List the first five prime numbers.
   • Answer: 2, 3, 5, 7, 11.

Evaluation Questions (15 Fill-in-the-Blank with Options)

1. Numbers that cannot be divided equally are called ___.
   a) Prime numbers
   b) Odd numbers
   c) Even numbers
   d) Composite numbers
   Answer: b) Odd numbers
2. Numbers that can be divided equally into two groups are called ___.
   a) Prime numbers
   b) Odd numbers
   c) Even numbers
   d) Composite numbers
   Answer: c) Even numbers
3. The smallest even number is ___.
   a) 1
   b) 2
   c) 3
   d) 4
   Answer: b) 2
4. Which of these is a prime number?
   a) 4
   b) 6
   c) 7
   d) 9
   Answer: c) 7
5. ___ is an example of an odd number.
   a) 2
   b) 4
   c) 5
   d) 8
   Answer: c) 5
6. The first prime number is ___.
   a) 1
   b) 2
   c) 3
   d) 5
   Answer: b) 2
7. 10 is ___.
   a) Odd
   b) Prime
   c) Even
   d) Composite
   Answer: c) Even
8. Which of the following is not a prime number?
   a) 2
   b) 4
   c) 3
   d) 5
   Answer: b) 4
9. ___ is the second odd number.
   a) 1
   b) 2
   c) 3
   d) 5
   Answer: c) 3
10. 7 is ___.
    a) Odd
    b) Even
    c) Prime
    d) Both a and c
    Answer: d) Both a and c

Class Activity Discussion (15 FAQs with Answers)

1. What are odd numbers?
   • Numbers that cannot be divided equally into two groups.
2. What are even numbers?
   • Numbers that can be divided equally into two groups.
3. What are prime numbers?
   • Numbers that have only two factors: 1 and themselves.
4. Is 2 a prime number?
   • Yes.
5. Is 1 an odd number?
   • Yes.
6. Is 1 a prime number?
   • No.
7. What is the first even number?
   • 2.
8. What is the smallest odd number?
   • 1.
9. Is 10 a prime number?
   • No.
10. Is 11 odd or even?
    • Odd.
11. Is 15 a prime number?
    • No.
12. Which number is both even and prime?
    • 2.
13. Are all prime numbers odd?
    • No, 2 is even and prime.
14. What are the factors of 7?
    • 1 and 7.
15. Is 20 odd or even?
    • Even.

10 Evaluation Questions

1. Define odd numbers.
2. Define even numbers.
3. Define prime numbers.
4. List the first five odd numbers.
5. List the first five even numbers.
6. List the first five prime numbers.
7. Is 3 odd or even?
8. Is 9 a prime number? Why?
9. What are the factors of 5?
10. Is 15 odd or even?

Conclusion

The teacher goes around to mark the pupils’ work, corrects errors, and praises their effort.

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