Improves imagination, construction and problem-solving skills Store away all your parts and pieces in the convenient container 50 models to build from Instructions included It’s time for some powered up K’NEX with the K’Nex 23012 Power & Play Building Set! Bring your models to life with a motor and over 525 classic scale K’NEX rods and connector! Use the included step-by-step colour-coded instructions to build 50 different models, half of which include the motor! The different models range in difficulty so you can progress from easier models to ones that are a bit more tricky. You can create a carousel, rescue chopper, basketball game and much more besides! The re-usable storage container can store all the parts and pieces or your current work in progress. Most models can be built one at a time.