The Engino Stem Mechanics Wheels Axles and Inclined Planes help children learn how wheels and axles use friction to move objects easily and how big tyres compare to small tyres. It helps them learn how an inclined plane can be used for lifting heavy objects and how another form of inclined plane, the wedge, is used in everyday applications. They can build 14 working models, such as a launching platform, a door with a knob, a well, an airport staircase, an experimental ramp and a splitting wedge. They can find easy-to-follow building instructions for all models either online or in the booklet included. The booklet provides detailed explanations of the different scientific principles applied and incorporates innovative experimental activities for hands-on learning. A Quiz section is also available to challenge your newly acquired knowledge. Suitable for ages nine years and above.