In this make-and-take activity, students use the absorbency of salt to make textured watercolour paintings.
Salt is a desiccant - that means it loves to absorb or "soak up" water. This is why salty foods make you thirsty; they absorb water out of the tissues in your body and leave you thirsty for more water.
These activities are part of Science World’s Big Science For Little Hands program. They were developed and tested with preschool and kindergarten educators. Some of the activities are done in stations.
Mysterious Mixtures PDF from Big Science For Little Hands.