The solubility experiment was very simple but fascinating for the children of Grade II. On 29th December, the children investigated which substances are soluble and which are insoluble in water. They loved the setup and execution of the experiment. When a substance dissolves in water, you can’t see it anymore; it’s still there but has mixed with the water to make a transparent liquid. Substances that do not dissolve in water are called insoluble. Children had a fun learning experience with the simple little experiment in their PBL class.