Stem Explorations- Levers & Pulleys Building Set, Age: 8+, Includes 130+ parts for single child/team of 2 children to build 3 lever or pulley models: a Balance, a Wheelbarrow and a Sailboat, children will be engaged in understanding Science, Etc.
Hydro-Electric Power Station - Working Water Turbine To Generate Electricity, Composed Of A Well Made Turbine With Transparent Cover Connected To A Small Motor To Generate Electricity. Ideal For Classroom Demonstrations