Perfect for constructing and experimenting with sand and water.

Which direction do the wheels turn? Why do they go fast or slow? How does the sand/water flow? What happens when the flow on the funnel is adjusted?

Includes an instruction guide (provides 12 building proposals that also encourage to try out own ideas), and a plastic storage container that can double as a sand bucket.

48 pieces with a flow-adjustable funnel and 2 spinning paddle wheels. 3yrs+.