# Lesson Plan: Directed Numbers
## Subject: Mathematics
## Level: Junior Secondary 2
## Duration: 60 minutes
### Lesson Objectives:
By the end of the lesson, students should be able to:
1. Define directed numbers.
2. Differentiate between positive and negative numbers.
3. Apply directed numbers in real-life contexts.
4. Perform basic arithmetic operations (addition, subtraction, multiplication, and division) with directed numbers.
### Materials Needed:
- Whiteboard and markers
- Number line chart
- Textbooks
- Worksheets
- Graph paper
- Calculators (optional)
### Key Vocabulary:
- Directed numbers
- Positive numbers
- Negative numbers
- Number line
### Lesson Outline:
#### Introduction (10 minutes)
1. **Greeting and Attendance** (2 minutes)
- Welcome students and take attendance.
2. **Warm-Up Activity: Number Line Drawing** (8 minutes)
- Ask students to quickly draw a simple number line on their papers.
- Briefly discuss how the number line works, emphasizing that numbers to the right of zero are positive and those to the left are negative.
#### Direct Instruction (15 minutes)
1. **Define Directed Numbers** (5 minutes)
- Explain that directed numbers include both positive and negative numbers.
- Use a number line to show examples of directed numbers.
2. **Positive and Negative Numbers** (5 minutes)
- Explain that positive numbers are greater than zero and are usually written without a sign, but can have a '+' sign.
- Explain that negative numbers are less than zero and are always written with a '-' sign.
3. **Real-Life Applications** (5 minutes)
- Give examples of everyday situations involving directed numbers (e.g., temperature changes, bank account balances, elevations).
#### Guided Practice (15 minutes)
1. **Number Line Activity** (10 minutes)
- Ask students to place different directed numbers on their number lines.
- Provide scenarios and have students indicate the correct position on the number line.
2. **Basic Arithmetic Operations** (5 minutes)
- Demonstrate how to add and subtract directed numbers using a number line.
- Practice multiplication and division of directed numbers through examples.
#### Independent Practice (15 minutes)
1. **Worksheet Distribution** (10 minutes)
- Distribute worksheets with problems involving directed numbers.
- Have students complete the problems individually.
2. **Pair Work** (5 minutes)
- Allow students to review their answers with a partner.
- Encourage discussion to clarify any misunderstandings.
#### Assessment (5 minutes)
1. **Quick Quiz** (5 minutes)
- Conduct a short quiz with 5 questions to assess understanding.
- Example questions:
- What is the result of -5 + 3?
- Place the following numbers on the number line: -2, 4, -3, 1.
- What does a negative bank balance indicate?
- Multiply -3 by 4.
- Divide 12 by -3.
#### Conclusion (5 minutes)
1. **Recap the Lesson** (3 minutes)
- Summarize the key points covered in the lesson.
- Ensure students understand the importance of directed numbers in real-life contexts.
2. **Homework Assignment** (2 minutes)
- Assign practice problems from the textbook.
- Encourage students to create their real-life examples involving directed numbers.
### Reflection:
- After the lesson, review the quiz results to assess students’ understanding.
- Note any areas of difficulty for further review in the next lesson.