Crosstown Adventure (1970)

This highly creative film invites young viewers to become active participants instead of passive viewers. An eight-year-old boy is accidentally shut up in a delivery truck that takes off across town. He can only guess where he is by listening to the outside sounds—warning bells on a drawbridge, fire truck sirens, the roar of a train. When the truck stops in a strange neighborhood, the boy climbs out and hides behind a hedge. What happens next? The teacher stops the film and the children make up their own endings before she shows the three filmed possibilities.