Wednesday, 17 June 2015

Light Bulb Moments

A lovely hour long science lesson to introduce electricity as a circuit and draw basic circuit diagrams.





What uses electricity in our home? Identify 10 things that would / wouldn't work in a power cut. Side notes into services that come into our house - water, telephone, gas.

Build a simple circuit to make a light bulb light up.
Side notes: identify batteries/cells have positive and negative, wire can't be on same side. Side note: ensuring connections are 'good' to avoid flickering.

Break the circuit, identify why the bulb went out.





Card sorting activity to match up the components with their name and diagrammatic representation, then draw our simple circuit.


Add a switch made from a drawing pin and paper clip.
Draw the diagram showing the bulb switched on.


 

Extend : Add a resistor to show how we can dim a bulb.