Reception children have taken full advantage of the wet weather to explore materials that may dissolve. Someone wanted to see whether chalk dissolved and so put the chalk in a puddle. It did not immediately dissolve so we put some icing sugar and then alka seltser in the puddle and watched as it fizzed and bubbled. The children decided to leave the chalk in a bucket under a stream of water to see if that would help it dissolve. They are going to check later today to see what has happened.