Have loads of fun building and playing with the Farm Vehicle set and discover the different workings of agricultural machines. The kit contains more than 200 parts to make and assemble 10 different dynamic models. 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. The “Science & Play Build” app integrates the build & play experience with interactive 3D animations .