Review on AOKESI Building Control Engineering Science by Sean Young

Don't waste your money on this product. Several components listed for assembly are missing, and the main body you start with was missing one of the yellow inserts shown. The instructions weren't easy to follow either. Tons of tiny components to build (which isn't a problem if you have any) but they come in 4 packs that seem to appear in order of steps. Open the first package, done, on to the next package. nope We used the components from Pack 2 almost immediately. My unit may have been faulty, but this thing was missing many of the components listed in the instructions. Too bad it would be a fun project for my kid.