In Year 3 we are looking at forces and magnets. As part of this topic we investigated how far a car will travel on different surfaces, and why this happens. We each made a prediction, which surface will cause the car to travel the furthest; grass, tarmac, wood or carpet. We had to make sure our investigation was a fair test by only changing the surface each time, and keeping every other variable the same. We then made large a graph of our results.