The sturdy 1m Ramp™ was designed by primary teachers for safe and accurate investigations into the relationships between slope or mass and distance or speed. It features a gradient adjuster that can be altered for different angles, an open-backed truck for different masses and 4 sets of different sized wheels - 25, 35, 50 and 62mm diameter. Great for the exploration of forces, prediction and planning, accurate measuring and timing, the collection and manipulation of data, and the identification and explanation of trends.