Place two tubs of dry sand next to each other and gather the children around.
Have the children spray water into one of the tubs and rake or mix the water and sand until it is moldable.
Have the children use tools as well as their bare hands to compare how the sand in each of two tubs feels differently.
Have the children construct something in the wet sand, like a tower, etc. Have them experiment with what they can create using only the dry sand.
Discuss the different textures between the wet and dry sand. Which is better for creating structures? Which do the children prefer? Discuss the sensory aspects of each.
Tips and Tricks
Keep cleanup supplies handy. Better yet, take this activity outside where a little loose sand on the ground will not be a problem.
Follow up Activity
Encourage further learning and exploration by having the children play using any molding or sculpting tools available.