I did this with a cascade of demonstrations set up starting from jumping wires leading up to a ribbon tweeter made out of aluminium foil playing music - look it up on youtube, it's great fun to do and the kids were mesmerised. Anyway - this is pretty basic, some past paper questions in the file and attached in a separate document. Feel free to leave a review - especially with suggestions for improvement but don't be too mean - it is free after all, and I hope it saves you some time.
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Appreciate your sharing, thank you
Excellent, thank you for keeping it free.
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