Wind Power (v 4.0) 2d so no more arguing over

so no more arguing over who has the most consecutive jumps

sturdy wood construction guarantees many years of imaginative entertainment

Making Change is an educational game where players use mental math to subtract the price of an item from the amount paid to make the correct change

Memory matching games develop so many skills

especially when you add 77 variations

Wind Power (v 4.0) 2d so no more arguing overOur fourth generation wind turbine kit! Wind is one of the most promising sources of clean, renewable energy available today. With this kit, you can assemble a realistic wind turbine complete with electric generator and adjustable rotor blades that are designed with complex aerodynamic curves to look and work like modern day wind turbine blades. Then, conduct experiments to optimize the turbines performance by adjusting the angle of the blades and