Project Description: A pencil with a built in speaker that changes pitch based on resistance!? Students will learn, in an unique way, how length and width of an electrical path changes resistance to electron flow. Using this tool they will investigate the difference between conductors and insulators, why some things can carry electricity, why some things are resistant to it, and how resistance can be changed in a circuit. ____________________________________________________________ In this lesson the core concepts focused on will be: Note: All lessons include a presentation and a hands on building period which they then use to perform various tests. ____________________________________________________________ Cost: ____________________________________________________________