Overview of P3.3 How do series and parallel circuits work? Lesson Statements Teaching activities Notes 1 (1hr separate and P3.3.1 relate the potential difference between two points in the circuit to the work done on, or by, a given amount of charge as it moves between these points potential difference (V) = work done (energy transferred) (J) ÷ charge (C) M1c, M3b, M3c, M3d P3.3.2 a) describe the difference between series and parallel circuits: to include ideas about how the current through each component and the potential difference across each component is affected by a change in resistance of a component Engage: Electrical circuits, AC and DC A partly interactive presentation about series and parallel circuits. Explore: Circuit builder interactive Another circuit simulator; a little simpler, but also easier to use. Explain: Series and parallel circuits: A water analogy A video featuring an experiment to model the behaviour of resistors in series and in parallel using water. Extend: Pupils show be given the opportunity to practice using the equation, including rearranging and converting between units. Evaluate: SAM question J259-03 Question 4 Link to delivery guide Electric circuits ink to transition guide series and parallel circuits Link to SAM 2 (1hr separate and P3.3.2 a) describe the difference between series and parallel circuits: to include ideas about how the current through each component and the potential difference across each component is affected by a change in resistance of a component b) describe how to practically investigate the brightness of bulbs in series and parallel circuits. Be able to draw circuit diagrams for the circuits used PAG7 Engage: Show pupils a diode, lamp, LDR and thermistor, pupils to name the component and draw its circuit symbol Explore: demo experiments Explain: PAG 7: Investigating the brightness of bulbs in series and parallel Extend: PAG 7: Quiz questions Evaluate: Give pupils the candidate progress sheet, from the reference materials section of the webpage. Pupils to tick of skills covered. Link to delivery guide Electric circuits Link to PAG Candidate progress sheet:
Outline Scheme of Work: P3 – Electric circuits Total suggested teaching time – 26 hours P3.7 What is the process inside an electric generator? (4 / 0 hours) Links to KS3 Subject content N/A Links to Mathematical Skills M1c M3b M3c Links to Practical Activity Groups (PAGs) N/A
Overview of P3.7 What is the process inside an electric generator? Lesson Statements Teaching activities Notes 1 (1hr separate science only) P3.7.1 recall that a change in the magnetic field around a conductor can give rise to an induced potential difference across its ends, which could drive a current P3.7.2 explain the action of a moving coil microphone in converting the pressure variations in sound waves into variations in current in electrical circuits Engage: How do microphones work? A short video explaining how different kinds of microphones work. Explore: Generator: Generator, magnetism, magnetic field An interactive Java application featuring a virtual magnet, electromagnet, transformer and generator. Explain: microphone demo Extend: Guitar pickup A simple demonstration of the principles by which electric guitar pickups work. Evaluate: compare loudspeakers to microphones – get pupils to discuss how the two work, hopefully they will come up with the idea that microphones are loud speakers in reverse. Link to delivery guide Electric circuits 2 (1hr separate science only) P3.7.3 recall that the direction of the induced potential difference drives a current which generates a second magnetic field that would oppose the original change in field P3.7.4 use ideas about electromagnetic induction to explain a potential difference / time graph showing the output from an alternator being used to generate a.c. P3.7.5 explain how an alternator can be adapted to produce a dynamo to generate d.c., including explaining a potential difference time graph Engage: explanation of generators Explore: Generator: AC A simple Java application showing an AC generator. Explain: Generation of alternating current A presentation explaining AC generation. Extend: Generator: DC A simple Java application showing a DC generator. Evaluate: Potential difference- time graphs pupils explain the graphs for a.c. and d.c. Link to delivery guide Electric circuits