Learning Resources Gears! Gears! Gears! FlightGears. Multiple building options, colourful gears, and spinning wheels will spur creativity to greater heights as children design and engineer their own flying machines! Follow the activity guide to build one of three designs, or mix-and-match pieces and create your own. FlightGears works with all Gears! Gears! Gears! building sets, so the possible creations are endless. Set includes 16 colourful gears, 2 wheels with 2 tyre treads, 1 propeller with cap, 22 connecting pieces and an activity guide. Suitable for ages 4+.