具体描述
在线阅读本书
Includes everything kids need to build 10 fun and functional motorized projects!
Kids can create a drink stirrer, a hypnoticon, a fan, a game spinner, a car, a tram, a winch, a conveyor, a crane, and a tranktor.
在线阅读本书
Includes everything kids need to build 10 fun and functional motorized projects!
Kids can create a drink stirrer, a hypnoticon, a fan, a game spinner, a car, a tram, a winch, a conveyor, a crane, and a tranktor.
