3 in 1 construction set comes with 94pcs blocks. Kids can build a merry-go-round, or a seesaw, and a vehicle ramp. All of three can be manual powered. Turn the handle, then the windmill will rotate correspondingly.
Come with detailed step by step guide, it is an easy construction and sensory toy for kids to learn mechanical principles, through assembling & observing gears moving from static to dynamic.