Science mad kids will have loads of fun building and playing with the Science Museum Mechanics Farm Tractor STEM Set. Discover the different workings of agricultural machines with more than 200 parts to explore. The illustrated manual explains how to assemble the models and includes insight on the principles of mechanics and engineering. Lots of special parts, such as the differential, gears, universal joint, and many more allow for experimenting with vehicles and understanding how they work. Introduce kids to the core principles of mechanics and engineering with the Mechanics Farm Tractor STEM Set This unique STEM set stimulates creativity and manual dexterity Download the Science & Play Build app to integrate the build and play experience with interactive 3D animations (available on iOS and Androidsmart device not included) Includes: 1 x Science Museum Mechanics Farm Tractor Stem Set with over 200 Parts Approximate Dimensions: 27.8 x 39.6 x 6cm Suitable for ages 8 years +