The boys have been fascinated with robots recently, so they have checked our every relevant book from the library, studied, designed, saved up money, purchased parts, and have begun building their robots.
It amazes me how much they have learned about electronics and the role of each component. They are designing their robots from scratch (without a kit or any instructions) and so far are doing pretty well. They have even been researching how to program the robots once they are built.
Tucker practicing soldering: