Drop & Roll – Montessori Discovery BoxLet me tell you about the Drop & Roll Discovery Boxone of the most exciting toys Ive ever played with! Its a box with a special hole on top where I can drop the ball and watch it disappear for a second. Then, like magic, the ball rolls down the little slide and pops out the other side! I get so excited every time it comes back, ready to start all over again. Mom says it helps me learn something called "object permanence" (basically, that things are