TechCard Balance Scales is a working set of scales to compare the 'weight' or 'mass' of different objects.
TechCard Balloon Turbine. Escaping air spins the high speed turbine. A whole year’s science in one model!
This TechCard Dragster is an elastic band powered car demonstrates many science topics and is great for racing!
TechCard Drawbridge is a simple but realistic model incorporating a hinge and winder to operate the bridge.
TechCard Merry Go Round is a crank operated fairground ride demonstrating simple mechanisms at work.
TechCard Snapping Snake is a linkage mechanism extends the snake and its jaw snaps shut, watch out!
TechCard Spiral Toy, a spindle rotates a simple ‘friction drive’ which operates in the same way as gears.