structure and function

Hear the Ocean

Have you ever been told that you can hear the ocean when you put a seashell to your ear? If you have tried it, you probably heard something that sounded like the ocean. What did you really hear?

Orange Slices

This is a cool science trick that will let you know the number of sections in an orange (or other citrus fruit) before you slice it. It makes a fun trick that seems like magic, but is actually just a matter of careful observation.