In another Inventions & Technology project, we studied how the phone makes use of radio waves to transmit signals. The children tested one way lines and then connected all their cups to try and form a "Party Line" *Bonus Assignment: Create a phone company, logo and catchphrase then decorate your phone (cup) accordingly: Chandler's TeleCo: "At the Speed of Light" Fisher's TurboPhone: "Faster Than Lightening & Thunder" Logan's Hello, Let's Talk: "Lightning Fast Phone Service"