Revision Mathematics Primary 6 Week 11 First Term Lesson Notes / Plans

Subject: Mathematics

Topic: Revision – Order of Operation

Duration: 45 minutes

Term: First Term

Week: 11

Previous Lesson: Basic Arithmetic Operations

Learning Objectives:

• Review the order of operations in mathematical expressions.
• Demonstrate the correct sequence for solving complex mathematical problems.
• Apply the order of operation rules in various scenarios.

Embedded Core Skills:

• Critical thinking
• Problem-solving
• Numerical reasoning

Learning Materials:

• Whiteboard and markers
• Mathematical symbols chart
• Practice worksheets
• Calculator (for selected exercises)

Teaching Methods:

• Interactive discussion
• Group problem-solving
• Individual practice

Content:

1. Definition of Key Words:
   • Order of Operation: Rules governing the sequence in which operations are performed in a mathematical expression.
2. Lesson Content:
   • Recap of basic arithmetic operations.
   • Introduction and explanation of the order of operation rules (BODMAS: Brackets, Orders (Exponents), Division and Multiplication – from left to right, Addition and Subtraction – from left to right).

Presentation:

1. Step 1: Review Basic Operations
   • Briefly revisit addition, subtraction, multiplication, and division to set the foundation.
2. Step 2: Introduction to BODMAS
   • Present the acronym BODMAS and explain each component.
   • Use examples to illustrate the importance of following the order of operations.
3. Step 3: Group Problem-Solving
   • Engage students in solving mathematical expressions using the order of operation rules.
   • Encourage discussion within groups to enhance understanding.

Teacher’s Activities:

• Facilitate discussions.
• Provide clear examples.
• Monitor group activities.

Learners’ Activities:

• Participate in discussions.
• Solve problems individually and in groups.
• Seek clarification when needed.

10 Evaluation Questions:

1. What does BODMAS stand for?
2. In the expression 3 + 5 * 2, what operation should be done first?
3. Simplify the expression: 4 + (6 – 2) * 3.
4. Why is it important to follow the order of operations in mathematics?
5. In the expression 8 / 2 * 4, what operation should be done first?
6. Evaluate: 2^3 – (4 * 2) + 5.
7. Explain the role of brackets in the order of operations.
8. Solve: 15 / (3 + 2).
9. Perform the operations in the correct order: 6 + 2 * 3 – 4.
10. How does the order of operations help us solve complex mathematical problems?

Conclusion on the Topic: Today, we revisited the order of operation in mathematics, ensuring we understand the sequence in which mathematical operations should be performed. Keep practicing, and next lesson, we’ll explore more challenging expressions together.

1. What does BODMAS stand for?
   • BODMAS stands for Brackets, Orders (Exponents), Division, Multiplication, Addition, and Subtraction. It represents the sequence to follow when solving mathematical expressions.
2. In the expression 3 + 5 * 2, what operation should be done first?
   • Multiplication should be done first, so the expression becomes 3 + (5 * 2).
3. Simplify the expression: 4 + (6 – 2) * 3.
   • First, perform the operation inside the brackets: 4 + (4 * 3). Then, multiply: 4 + 12, resulting in 16.
4. Why is it important to follow the order of operations in mathematics?
   • Following the order of operations ensures that mathematical expressions are solved consistently, preventing ambiguity and obtaining accurate results.
5. In the expression 8 / 2 * 4, what operation should be done first?
   • Division should be done first, so the expression becomes (8 / 2) * 4.
6. Evaluate: 2^3 – (4 * 2) + 5.
   • First, calculate the exponent: 8 – (4 * 2) + 5. Then, perform multiplication and subtraction: 8 – 8 + 5, resulting in 5.
7. Explain the role of brackets in the order of operations.
   • Brackets indicate that the operations inside them should be performed first, ensuring clarity and precedence in solving mathematical expressions.
8. Solve: 15 / (3 + 2).
   • Start by solving inside the brackets: 15 / 5, resulting in 3.
9. Perform the operations in the correct order: 6 + 2 * 3 – 4.
   • Follow the BODMAS order: 6 + (2 * 3) – 4. First, perform multiplication, then addition, and finally subtraction: 6 + 6 – 4, resulting in 8.
10. How does the order of operations help us solve complex mathematical problems?
    • The order of operations provides a standardized approach to solving mathematical problems, ensuring that expressions are evaluated consistently and accurately, especially when dealing with multiple operations and variables