STEM Builder Series Build a Waterway

We've had this kit for a week and my 5-year-old is already fascinated by how adjusting the slope changes the water flow. The 90 pieces give him enough to build a really complex system on his own.

My 4-year-old kept rebuilding the ramps to see if the water would go faster, and the 90 pieces gave us hours of trial and error. The gravity experiments were simple enough for her to understand on her own, which made it feel less like a toy and more like her first real engineering project.

My 6-year-old spent an entire rainy afternoon rebuilding the waterway over and over, and I loved watching him learn how the slope of each piece changed the flow. The 90 pieces give you plenty of room to experiment, and the water pressure effect was a huge hit with both my kids.