Best Selling Books by Rebecca L. Johnson

"Examine the organization of the cells, tissues, organs, and systems that make up the human body. Then take a closer look at the circulatory system"--Publisher website

Discusses extreme environments and the special challenges posed for the scientists who study volcanoes and glaciers.

Cells are the smallest units of life. All living things are made of one or more cells. Most cells have a nucleus that controls everything the cell does. All cells have smaller parts called organelles, and each one has a specific job. Groups of similar cells form tissues. Groups of tissues form organs. Groups of organs form organ systems that work together.

Students learn about the science behind geckos' amazing ability to walk up walls and how that inspires new inventions!

Properties describe what matter is like. Some properties of matter can be measured. Three states of matter are solid, liquid, and gas. Matter can change states. Elements, which have one kind of atom, are organized into the Periodic Table of Elements. Molecules have two or more atoms. Compounds are molecules with two or more different elements.

Light and sound are waves of moving energy. Light is a form of energy you can see. Light waves travel in straight lines away from a light source. Sound is a form of energy you can hear. Sound happens when particles of matter vibrate. Properties of light and sound waves include wavelength, frequency, and amplitude.