Today in science, Willow class were testing whether certain solids are soluble or insoluble. There were some surprising results even with familiar materials such as sugar and gravy.
The children predicted that these would dissolve. They did a little bit but not completely. However, the children realised that the temperature of the water can have an effect too!
They also realised that some solids, such as flour and chalk seem to dissolve but then separate again.