In Science this week Year 5 have been looking at speed. The class built drag racers using Lego WeDo sets and then coded them to move along the floor using their laptop computers. After timing how long the robot racers took to move a set distance, adjustments were made to the cars’ design. Inquisitive students discovered that putting bigger wheels at the back and altering the gearing ratio allowed the cars to nearly double the speed of the original design. What a fantastic hands-on lesson in speed and motion!