**Lesson Plan: Current Electricity**
**Grade Level:** Senior Secondary 1 (SS1)
**Subject:** Physics
**Topic:** Current Electricity
**Duration:** 1 hour
### **Objectives:**
By the end of the lesson, students should be able to:
1. Define current electricity.
2. Understand the difference between direct current (DC) and alternating current (AC).
3. Explain Ohm’s Law.
4. Identify the components of an electric circuit: resistors, batteries, switches, and wires.
5. Solve basic problems involving current, voltage, and resistance.
### **Materials:**
- Whiteboard and markers
- Projector and computer (for multimedia presentation)
- Multimeter
- Resistors, batteries, wires, and switches for circuit construction
- Worksheets with practice problems
### **Lesson Structure:**
#### **Introduction: (10 minutes)**
1. **Hook:** Start with a simple question to pique interest, e.g., "How does turning on a light bulb work?" Show a brief video or animation illustrating the flow of electric current.
2. **Purpose:** Explain the importance of understanding current electricity in daily life and its applications in technology and industry.
3. **Learning Objectives:** Clearly state the objectives of the lesson.
#### **Presentation: (15 minutes)**
1. **Definition:** Define current electricity as the flow of electric charge through a conductor.
2. **Types of Current:**
- **Direct Current (DC):** Charges flow in one direction. Example: batteries.
- **Alternating Current (AC):** Charges periodically reverse direction. Example: household outlets.
3. **Ohm's Law:** Introduce the formula \(V = IR\) (Voltage = Current x Resistance) and explain its components.
4. **Components of an Electric Circuit:**
- **Resistors:** Limit the flow of electric current.
- **Batteries:** Provide the source of electric potential.
- **Switches:** Control the flow of current.
- **Wires:** Conductive pathways for current flow.
#### **Activity: (20 minutes)**
1. **Hands-On Circuit Construction:** Divide students into small groups and distribute circuit-building materials. Instruct them to:
- Construct a simple circuit using a battery, resistor, switch, and connecting wires.
- Measure the voltage across the resistor and the current through the circuit using a multimeter.
2. **Worksheet:** Assign practice problems that involve calculating current, voltage, and resistance using Ohm's Law.
#### **Discussion: (10 minutes)**
1. **Group Reflection:** Have a few groups present their observed measurements and discuss any discrepancies or challenges faced.
2. **Problem-Solving Review:** Go over the worksheet problems and solutions as a class, explaining any difficult concepts.
#### **Conclusion: (5 minutes)**
1. **Recap:** Summarize key points: definition of current electricity, types of current, components of a circuit, and Ohm's Law.
2. **Q&A:** Allow time for any questions from students.
3. **Assignment:** Give a homework assignment where students will need to solve additional Ohm's Law problems and write a short paragraph on the importance of current electricity in modern society.
### **Assessment:**
- Participation during the hands-on activity.
- Accuracy of worksheet problems.
- Quality of group reflections and discussion contributions.
- Homework assignment.
### **Follow-Up:**
In the next lesson, delve deeper into series and parallel circuits, and explore real-world applications of current electricity.
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This lesson plan aims to balance theoretical understanding with practical application, fostering a deeper comprehension of current electricity among SS1 students.