Bamboo is a giant grass that grows in lands that are very hot and wet. It is stiff, like wood, and has a hollow stem. Materials – bamboo pole – coping saw – hand drill with j-inch twist drill…
Opening doors, playing baseball, running a race, practicing for a school play—you really keep moving. How does your body keep going? What makes you move? You keep moving in almost the same way a…
Billions and billions of tiny plants and animals live in the ocean. Most of them are so small they can be seen only with a microscope. These tiny plants aren’t like plants you have seen. Some look…
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