**Lesson Plan for Primary 3: Basic Science and Technology**
**Topic: Measurement of Time + System Unit + Physical Fitness**
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**Objectives:**
By the end of the lesson, students should be able to:
1. Understand the concept of time and how it is measured.
2. Identify and describe the basic components of a computer's system unit.
3. Recognize the importance of physical fitness and practice basic fitness activities.
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**Materials Needed:**
- Wall clock with seconds hand
- Stopwatch
- Flashcards with pictures of computer components (e.g., CPU, monitor, keyboard)
- A real desktop computer (if available)
- Mats or open space for exercises
- Audio system for playing music during exercises
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**Introduction: (10 Minutes)**
1. **Greetings and Warm-Up:**
- Begin with a brief greeting and warm-up song/dance to engage the students.
- Quick recap of the previous lesson to create a connection.
2. **Introduction of Today's Topics:**
- Briefly explain that today's lesson will cover three different areas: Measurement of Time, System Unit of a Computer, and Physical Fitness.
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**Part 1: Measurement of Time (20 Minutes)**
1. **Discussion:**
- Ask students how they know what time it is and introduce the concept of time.
- Show the wall clock and explain the components: hours, minutes, and seconds hands.
- Explain how we measure time in seconds, minutes, hours, days, weeks, months, and years.
2. **Activity:**
- Demonstrate using the stopwatch and how it measures time accurately in seconds.
- Have students take turns using the stopwatch to time simple activities like clapping hands for 10 seconds.
3. **Interactive Questioning:**
- Ask the class questions like: How many seconds are in a minute? How many minutes in an hour?
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**Part 2: System Unit (20 Minutes)**
1. **Discussion:**
- Introduce the term "system unit" and explain it is part of a computer that houses the central processing unit (CPU), memory, and other crucial components.
- Show flashcards or the real desktop computer components while explaining their purpose.
2. **Hands-On Activity:**
- If a real computer is available, open the case to show students the inside of a system unit.
- Otherwise, use pictures to point out the CPU, memory, and other key parts.
3. **Interactive Questioning:**
- Ask questions like: What is the function of the CPU? What does memory do in a computer?
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**Part 3: Physical Fitness (20 Minutes)**
1. **Discussion:**
- Discuss the importance of physical fitness and how it affects health.
- Explain that regular exercise can help keep our bodies strong and healthy.
2. **Activity:**
- Lead the students through a series of simple physical exercises:
- Warm-up stretches
- Jumping jacks
- Running in place
- Cool-down stretches
3. **Music and Movement:**
- Play music and have students move to the rhythm while performing the exercises.
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**Conclusion: (10 Minutes)**
1. **Review:**
- Recap the key points of the lesson: how we measure time, the main components of a computer system unit, and the importance of physical fitness along with some basic exercises.
2. **Interactive Q&A:**
- Encourage students to ask any questions they may have about the lesson topics.
- Conduct a quick quiz game with simple questions about measurement of time, system units, and physical fitness to reinforce learning.
3. **Closing:**
- Praise students for their participation.
- Hand out a worksheet with questions related to the lesson for them to complete at home or in class as a reinforcement exercise.
- End with a fun song or activity.
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**Assessment:**
- Observe student participation during activities.
- Evaluate student responses during Q&A sessions.
- Review the answers on the take-home worksheet for comprehension.
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**Homework:**
- Draw a clock showing 3 different times and label the hour and minute hands.
- Write down the names and functions of three components found in the system unit of a computer.
- List three exercises they performed and explain why each is good for their health.
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**Notes:**
- Adapt the activities based on available resources and student needs.
- Use positive reinforcement to keep students motivated and engaged throughout the lesson.