CHILDREN learn by doing and these 4-year-olds at Tower Day School were eager to learn how to squeeze the right number of water drops into a cup, the first step in making their own colorful slime, with the help of teacher Nancy Miller during the chemistry segment of Science Week. (Maureen Doherty Photo)

CHILDREN learn by doing and these 4-year-olds at Tower Day School were eager to learn how to squeeze the right number of water drops into a cup, the first step in making their own colorful slime, with the help of teacher Nancy Miller during the chemistry segment of Science Week. (Maureen Doherty Photo)