Thankfully, some of the most colorful ways to broaden your child’s horizons are absolutely free and perhaps even right in your own backyard. Nature is an undeniably stunning resource of eye-opening learning experiences for children. Here, 8 fascinating facts about nature that are sure to blow your child’s mind. According to SanDiegoZoo.org, African penguins have three different types of calls: a bray, used to attract a mate; the yell, used to defend their territory; and the haw, used by mates to locate each other when one is on land and one is at sea.