3 years & up. This 90-piece set includes a variety of items to create working waterways. Children can experiment with the effects that construction, gravity, and distance have on water pressure and flow as they create endless waterway configurations. Materials are transparent to allow for easy viewing of water flow. The Build a Waterway STEM Kit builds on children's natural curiosity by providing the materials and freedom to explore. The funnels, measuring pitchers, connector tubes, blockers, and water wheel provide endless opportunities for child-guided learning. Children should be encouraged to build, create, and invent on their own. Experimentation and use of the included materials can be encouraged at the water table, in small groups, and for independent learning. Activity card(s) included.