School children learn that mistakes made when cycling to school aren't always forgiven - in this instructional film made by their headmaster

This amusingly shocking film, made by A C Barnden, shows how bad cycling practice and inattention to other traffic leads to disaster. First, we're asked to spot the mistakes made by children on bicycles. They make many on their way to school but arrive unscathed. Then, as we repeat the journey, the children's careless mistakes end in gruesome accidents. Finally, we see the children cycling properly and displaying good road sense - and they all arrive at school safe and sound.