Computers make it possible to simulate electric circuits. While virtual experiments are (inevitably) one step removed from the real thing, they are vastly better than no experiments at all. Students can explore the lab-- there is a 'Sci-clopedia' with lots of background information about electricity, and lots of pre-made circuits to play with. Most students quickly become comfortable using the programs small number of tools to create and modify circuits. Teachers considering using the program should take some time to explore its interface, learning how to add and remove components, connect them with (virtual) wire, etc. Rotating components may take a bit of practise.
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