aidemia--modules-lessonplan_request	Titles of parts of the lesson must be formatted as headings
What to create	Lesson plan
Which subject	Mathematics
What topic	Subtraction
What length (min)	50
What age group	Year or Grade 4
Include homework
Include images descriptions
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Year 4 Mathematics Lesson Plan: Subtraction

Lesson Duration

50 minutes

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Introduction (10 minutes)

Objective

The objective of this lesson is to reinforce the concept of subtraction and enhance students' ability to solve subtraction problems involving multi-digit numbers.

Warm-up Activity

Begin with a quick mental math quiz, asking students to solve simple subtraction problems such as:

• 15 - 8
• 23 - 5
• 40 - 19

Encourage students to raise their hands to share answers and explain their thought processes.

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Direct Instruction (15 minutes)

Explanation of Subtraction

Explain the concept of subtraction as taking away a certain quantity from a total. Use visual aids, such as number lines or counters, to illustrate the process.

Key Vocabulary

Introduce and explain key terms related to subtraction:

• Minuend: The number from which another number (the subtrahend) is to be subtracted.
• Subtrahend: The number that is to be subtracted from another number (the minuend).
• Difference: The result of the subtraction.

Demonstration

Solve a sample subtraction problem on the board:

• Example: 56 - 29
  • Break it down into steps, starting with the place values.
  • Show students how to regroup if necessary.

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Guided Practice (10 minutes)

Group Activity

Divide the class into small groups. Provide each group with a set of subtraction problems on whiteboards. Encourage them to solve problems collaboratively while discussing their methods.

Sample Problems:

1. 73 - 48
2. 92 - 37
3. 86 - 34

After 5 minutes, ask each group to present one of their solved problems, explaining their approach.

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Independent Practice (10 minutes)

Individual Worksheet

Distribute a worksheet featuring a variety of subtraction problems that require regrouping. Make sure to include word problems to allow students to apply their subtraction skills in real-world scenarios.

Sample Worksheet Problems:

1. 64 - 29 = ?
2. A farmer has 150 apples. He sells 47. How many apples does he have left?
3. 82 - 56 = ?

Monitoring

As students work independently, circulate the room to offer assistance where needed and check for understanding.

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Closure (5 minutes)

Review and Reinforce

Ask students to share some of the strategies they used to solve their subtraction problems. Summarise key points of the lesson:

• The concept of subtraction and its terminology
• The importance of place value and regrouping

Exit Ticket

Have each student write down one thing they learned about subtraction today before leaving the class.

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Assessment

Evaluation Criteria

Assess students’ understanding through:

• Participation in group activities
• Completion and accuracy of independent worksheet
• Contributions during discussions

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Materials Needed

• Whiteboards and markers for group work
• Worksheets (one per student)
• Visual aids (number lines, counters)
• Pencils or pens

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This lesson plan adheres to the Australian Curriculum standards, focusing on enhancing mathematical understanding and fluency in subtraction for Year 4 students.