Resistance - KS3 Activate lesson

A full 1 hour lesson designed for a mixed ability year 8 class.
This is the 5th lesson in “Chapter 1 - Electricity and Magnetism” from Activate 2, Physics.
This lesson should be suitable to teach to any KS3 Physics class, even by those where physics is not their specialism.
This lesson contains a class practical investigating how increasing the number of bulbs in a circuit affects the current flowing through the circuit.

From this lesson, students should be able to:

• Define the term ‘resistance’
• Recall that resistance is measured in ohms and give its symbol
• Explain what causes resistance in a wire
• Calculate resistance using the formula: Resistance (Ω) = potential difference (V) ÷ current (A)
• Investigate how increasing the number of bulbs in a circuit affects the current flowing through the circuit.

All of my lesson resources contain:

• A 5-in-5 retrieval-style starter
• An interesting lesson hook, careers link, or retrieval practice to start the lesson
• Teacher input slides with dual coding and reduced cognitive load
• Teacher models
• Regular ‘check for understanding’ slides, such as hand signals quizzes
• Regular student independent practice slides, with optional scaffolds, challenges and answer slides
• A plenary task