Fun Facts About Fleas Before a flea jumps, the springlike material in its hind legs is pushed together, like the spring in the flea jumper in this investigation. When the flea’s legs stretch out again, the “springs” push the legs forward and the flea jumps through the air. If the size of the body is [...]

Pond water contains some living creatures that are too small to be seen with the naked eye (without a microscope). Some of these creatures are made of only one cell. The paramecium is one such creature. Paramecium are sometimes called “slipper animals” because they are shaped much like the sole of a shoe. Paramecium move [...]