Sequence on a class of primary schoolchildren visiting the Ontario Science Centre in Toronto, Ontario, operating a pedal-powered generator connected to lights and to a sound making apparatus. Shots of schoolchildren listening to an adult explaining the workings of an oscilloscope. Various shots of children playing in a sound box, tapping on sound producing disks and diaphragms. LSs of children playing with an organ. HAMS of the chidren's hands on two keyboards. PAN of the lobby of the Ontario Science Centre, children enjoying soft drinks.