Learning Resources Gears! Gears! Gears! Starter Building Set. Set imaginations in motion with this great value building set! Young engineers will love creating endless constructions with this set of 28 plastic gears, 14 sturdy square pillars, 13 six way axles, four interlocking bases and handle. Includes activity guide. Develops critical thinking and problem solving skills. Set comes in a handy box for storage. Compatible with all other Gears! Gears! Gears! sets. Suitable for ages 3+.