We love making these Rainbow "sand" jars! To make: Pour salt on paper plates and have the children rub chalk (drawing chalk works best, but any colored chalk will do) in circles until the salt takes on color. Fold the paper plates in half and assist the children in pouring their salt plates into a glass BALL jar. Fill the jar approx. half full, add miniature letters, shapes, numbers, … [Read more...] about Rainbow Salt Discovery Jars