Thomas had purchased the Klutz Battery Science book/kit a few weeks back, and that led to our pulling out this old Radio Shack Electronics Learning Lab kit that had been a gift to Eddie's son Nick a few years back. Nick never did get into it, but I'm glad we kept it.
Eddie read from the manual, which has a lot of different electronics projects to build. The first workbook is called Basic Electronics: transistors and integrated circuits, and the second is called Digital Logic Projects. I think there's enough in there to keep them busy for a really long time!
First they built a "black box" test circuit, using an integrated circuit, resistors, capacitors, lots of connection wires.The project they were working on this day was something to demonstrate using light-sensitive photoresistors to change tone frequency with light.