Notation of Numbers Primary 5 Lesson Note

Lesson Plan: Notation of Numbers

Subject: Mathematics
Class: Primary 5 (Basic 5)
Term: First Term
Week: 2
Age: 9–10 years
Duration: 40 minutes
Topic: Notation of Numbers
Sub-topic: Writing Numbers in Figures and Words
Reference Material: New General Mathematics for Primary Schools 5, Lagos State Unified Scheme of Work

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Behavioural Objectives

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

1. Explain the meaning of notation of numbers.

2. Write numbers correctly in figures and in words.

3. Read and interpret large numbers confidently.

4. Apply the concept of notation in everyday situations, e.g., reading prices, phone numbers, and population figures.

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Instructional Materials

• Chalkboard/Whiteboard

• Marker/Chalk

• Place value chart

• Flashcards with numbers and words

• Real-life examples (Naira notes, phone numbers, bus fare boards, population statistics)

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Keywords

• Notation

• Digits

• Figures

• Words

• Place value

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Set Induction (5 minutes)

Teacher’s Action:
I will walk into the classroom holding a mock price tag:

• ₦2,350 for “Bag of Rice”

• ₦45,000 for “School Fees”

• ₦1,000,000 for “Brand New Keke Napep”

I’ll ask:

“Class, how do you read these numbers? And if I wanted to write them in words for someone who cannot see the figures, how would I do it?”

Expected Responses from Pupils:

• “Two thousand three hundred and fifty.”

• “Forty-five thousand.”

• “One million naira.”

I will then say:

“Exactly! That’s part of what we call notation of numbers. Today, we will learn how to write numbers in figures and words correctly, so no one will confuse your ₦10,000 with ₦100,000.”

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Lesson Development

Step 1 – Explanation of Notation of Numbers (10 minutes)

Teacher’s Action:

• Explain that notation of numbers is the way numbers are represented using digits (figures) or written in words.

• Show examples on the board:

  • Figures: 125, 2,500, 45,603

  • Words: One hundred and twenty-five, Two thousand five hundred, Forty-five thousand six hundred and three

• Introduce the place value chart (Ones, Tens, Hundreds, Thousands, Ten Thousands, Hundred Thousands, Millions).

Pupil’s Action:

• Observe and ask questions.

• Read examples aloud.

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Step 2 – Writing Numbers in Figures (8 minutes)

Teacher’s Action:

• Write some numbers in words and ask pupils to write them in figures:

  1. Three hundred and seventy-five → 375

  2. Two thousand and eighteen → 2,018

  3. One million, four hundred and fifty thousand → 1,450,000

• Explain how commas are used to separate groups of three digits for easy reading.

Pupil’s Action:

• Write the answers in their exercise books.

• Read their answers aloud.

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Step 3 – Writing Numbers in Words (8 minutes)

Teacher’s Action:

• Write some numbers in figures and ask pupils to write them in words:

  1. 246 → Two hundred and forty-six

  2. 5,020 → Five thousand and twenty

  3. 89,305 → Eighty-nine thousand three hundred and five

• Emphasise correct spelling of number words.

Pupil’s Action:

• Write the answers in words.

• Correct each other’s spellings where necessary.

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Step 4 – Real-life Application (5 minutes)

Teacher’s Action:

• Discuss where notation is used in daily life:

  • Reading time on digital clocks

  • Phone numbers

  • Bank account numbers

  • Bus fares

  • Examination scores

• Give examples using real Nigerian contexts.

Pupil’s Action:

• Mention examples from their own experiences.

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Evaluation (5 minutes)

Write the following in figures:

1. Six hundred and ninety-two

2. Forty-three thousand and twenty

3. One million, twenty-five thousand

Write the following in words:
4. 120
5. 2,408
6. 75,619

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Conclusion

Teacher summarises the lesson, re-emphasising that notation of numbers is the correct way of representing numbers in figures and words, which is essential for accuracy in daily life.

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Assignment

1. Write five prices of goods in your local market in figures and words.

2. Write your parents’ phone number in figures and words.

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