As part of Science Week, 5th Class investigated inertia and the importance of wearing seat belts in cars. To test and prove this we made Eggmobiles and playdough dummies. To make sure it was a fair test the eggmobiles were all the same size and the dummies were the same weight. The variable that we changed was the seat belt worn. The eggmobile was ‘driven’ into a wall and the results were recorded. We tested it three times; no seat belt, one seat belt and finally a seat belt on one of the dummies. Our predictions were accurate. When the dummies had a seat belt on they were protected while the other dummies were ‘injured’.