Mathematics - Junior Secondary 1 - Whole numbers: Counting and writing

Whole numbers: Counting and writing

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TERM: 1ST TERM

WEEK 1

Class: Junior Secondary School 1
Age: 12 years
Duration: 40 minutes of 5 periods
Subject: Mathematics
Topic: Whole Numbers: Counting and Writing
Focus: Millions, Billions, Trillions

SPECIFIC OBJECTIVES:

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

  1. Identify and read numbers in millions, billions, and trillions.
  2. Write such numbers in figures and words.
  3. Count in large number groups (by millions, billions, trillions).
  4. Use place value charts to understand positions of digits.
  5. Apply the knowledge to real-life examples like population and finance.

INSTRUCTIONAL TECHNIQUES:

  • Question and answer
  • Guided demonstration
  • Discussion
  • Drills and exercises
  • Real-life application

INSTRUCTIONAL MATERIALS:

  • Place value charts
  • Flashcards
  • Charts of global population figures
  • Abacus (optional)
  • Worksheets
  • Whiteboard and marker

PERIOD 1 & 2: Counting & Writing Millions and Billions

PRESENTATION:

Step

Teacher’s Activity

Pupil’s Activity

Step 1 - Introduction

Explains place values and difference between thousands, millions, billions.

Pupils listen, ask and answer questions.

Step 2 - Explanation

Writes examples like 2,000,000; 5,000,000,000. Reads and breaks them down.

Pupils repeat and practice.

Step 3 - Demonstration

Uses chart/flashcards to count by millions/billions.

Pupils practice counting and reading.

Step 4 - Note Taking

Pupils copy the examples and notes.

Pupils take notes.

NOTE ON BOARD:

  • 1,000,000 = One million
  • 1,000,000,000 = One billion
  • 1,000,000,000,000 = One trillion
  • 2,304,000,000 = Two billion, three hundred and four million

EVALUATION (5 exercises):

  1. Read: 4,000,000
  2. Write in figures: Five billion
  3. Read: 1,200,000,000
  4. Write in words: 3,000,000,000
  5. Count in steps of millions: 1 million to 10 million

CLASSWORK (5 questions):
Write in words:

  1. 12,000,000
  2. 2,000,000,000
  3. 5,450,000
    Write in figures:
  4. Nine billion
  5. Four hundred million

ASSIGNMENT (5 tasks):

  1. Write 3 large numbers in figures and in words.
  2. Count by 10 millions to 100 million.
  3. Count from 1 billion to 5 billion.
  4. Write 1 trillion in figures.
  5. Write 1.5 billion in words and figures.

 

PERIOD 3 & 4: Understanding Place Value (Millions–Trillions)

PRESENTATION:

Step

Teacher’s Activity

Pupil’s Activity

Step 1 – Introduction

Reviews last lesson, leads discussion on how digits have different values.

Pupils answer questions.

Step 2 – Explanation

Demonstrates using place value chart up to trillions.

Pupils observe and ask questions.

Step 3 – Demonstration

Shows how to extract value and place of any digit.

Pupils solve examples with guidance.

Step 4 - Note Taking

Teacher writes summary, pupils copy.

Pupils copy and practice.

NOTE ON BOARD:

  • Number: 4,582,713,900
  • Place value of 8: Hundred millions
  • Value of 8: 800,000,000

EVALUATION (5 exercises):
Write the value and place value of the underlined digit:

  1. 63,000,000
  2. 2,000,040
  3. 510,000,000
  4. 7,203,000,000
  5. 9,000,000,000

CLASSWORK (5 questions):
State the value and place value:

  1. 8,340,000,000
  2. 1,005,000,000
  3. 900,000,000,000
  4. 7,300,000
  5. 60,000,000

ASSIGNMENT (5 tasks):

  1. Write 5 large numbers.
  2. Identify any 2 digits in each number.
  3. State their place value and value.
  4. Create your own number in trillions.
  5. Write the number in words.

 

PERIOD 5: Application to Real Life

PRESENTATION:

Step

Teacher’s Activity

Pupil’s Activity

Step 1 - Introduction

Introduces real-life usage – money, population, distances.

Pupils listen and ask questions.

Step 2 - Examples

Shows data from newspapers or internet.

Pupils identify numbers and explain.

Step 3 - Drill

Pupils solve large number application exercises.

Pupils write and discuss.

EVALUATION (5 questions):

  1. What number is 1 million more than 1,000,000,000?
  2. Which is greater: 750,000,000 or 700,000,000?
  3. Find the value of the digit 6 in 3,604,000,000
  4. Write in words: 9,025,000,000
  5. Find the difference between 1 trillion and 800 billion.

CLASSWORK (5 tasks):

  1. 3,000,000 + 5,000,000
  2. 1,000,000,000 – 250,000,000
  3. Compare 5,000,000 and 5,000,000,000
  4. Round 3,456,000,000 to the nearest million
  5. Add: 2,000,000 + 1,000,000,000

ASSIGNMENT (5 tasks):

  1. Find 3 large numbers in newspapers/magazines.
  2. Write each in words and figures.
  3. State what each number is referring to.
  4. Write the place value of any digit in each.

Use one to create a word problem.