Make a Pinwheel! Learn with us how to make a pinwheel and the science behind it in this video. A pinwheel is a simple toy made of paper or plastic attached at its axle to a stick by a pin. It is designed to spin when blown upon by a person or by the wind. Questions 1. What happens when you blow at the Pinwheel? 2. What comes out of your mouth when you blow at the Pinwheel? 3. What is the effect of the wind? Find out the answers from the clip above! | Marshall Cavendish Education