A video from ECU's archive of documentaries and teaching films. The program explores three technology activities:Mouse Trap Racers,Electric Beer Can Racers and Water Rockets All projects explored are extensions of common Technology projects and the three technology activities examined, utilise the steps of : 'design', 'make' and 'appraise'. The instructional model supports 'constructivist' learning theory. Co-operative learning is advocated, as well as the exploration of simple technology, using simple equipment, such as recycled and common materials. The motivation for the investigations, emphasises 'high-interest', 'hands on' problem solving. Produced by David Crewes.