This resource will help you build your own Modulated Laser Pen and receiver. There are also a series of teaching ideas that have been really effective in learning about Signal Generation and transmission, Optical Fibres, IR and Visible Light in Communication, The Photoelectric Effect, etc...
Most activities are suitable for KS4 and some for KS5.
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A very cool project. Very helpful, informative and easy to follow! Thanks!!
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