On May 19, 2017, kids came to the Pasadena Public Library to make wind turbines that would generate electricity by turning the shaft of a hobby motor. We were inspired by a project we found at https://www.exploratorium.edu/snacks/.... But since making the light bulb come on didn't work (the motors we had either weren't strong enough or were too strong) we tested the amount of electricity generated a different way: with a digital multimeter. Kids still learned a lot about electricity, energy and wind power! Here's the presentation they watched to learn about these concepts.