In our Science topic, we are continuing to discover the different ways materials can be changed and separated. This week we designed an experiment to find out which solids dissolved in water. Firstly we had a solution with candy floss that had been dissolved into it. The children had to work out what was inside the water – they discovered it was sugary and that it wasn’t just water but a solution made of water and the candy floss.
Later in the lesson they tested other solids to see if they would become solutions, ensuring they had made a fair test in which only one variable changed. They observed that sugar dissolved, salt and coffee partly dissolved and cereal, rice and sand did not dissolve at all. During the lesson, the children had to come up with ways to record their results and produced some excellent tables with detailed observations – understanding that this is an important part of the scientific process!