Children in fourth and fifth class completed an experiment investigating the density of water. Children changed the density of water four times and presented the different levels of density using food colouring. Children worked together as scientists to explore and decide on the best method of carrying out the experiment. Children planned, problem-solved, collaborated and communicated on their method of carrying out the experiment. Mistakes were encouraged and children used these mistakes to learn from the experience. Children were engaged and motivated in the learning taking place. They greatly enjoyed working as scientists!