Place a random number of larger weights in one of the penguin’s baskets and see if you can guess how many smaller weights you need to balance it. Since each fish has a number, your little mathematician will thrive and grow in confidence as he or she learns simple math, like addition and subtraction. The Hape Penguin Scales set includes 10 numbered, stackable fish, a waving penguin and two baskets. Ages 3 and up.