Push and pull Learn about magnets

By Julia Vogel

"Amazing magnets are everywhere--on the refrigerator and inside machines and toys. Even Earth is a giant magnet! A magnet can be strong enough to lift a car. But magnets work only in a certain way....

Your sensational sense of sight

By Julia Vogel

Measuring temperature

By Julia Vogel

Readers learn what temperature is and why and how it is measured. They learn about the Celsius and Fahrenheit scales and where each is used. Readers learn about thermometers and how they help us in...

Measuring time

By Julia Vogel

Readers learn what the calendar measures and why knowing how to measure days, weeks, months, and years is important. They learn the history of the lunar and solar calendars, how days and months get...

Measuring time

By Julia Vogel

Readers learn what the clock measures and why knowing how to tell time--in seconds, minutes, and hours--is important. They learn the history of the clocks, including sundials and hourglasses. They...

Measuring weight

By Julia Vogel

Readers learn what gravity is and how it impacts weight. They learn about the US customary system and the metric system, where each is used, and the units of measurement in each system. Readers als...

Discover air

By Julia Vogel

"Air may be invisible, but it's a powerful force all around us. Air makes wind. It carries sound and smells. It lets us breathe. This simple, colorful book teaches kids all about amazing air"--

Discover energy

By Julia Vogel

"Energy gets things done! Where does energy come from? What kinds of energy are there? Why do we need to save energy? This simple, colorful book teaches kids the basics of this important science ph...

Caribou Our Wild World

By Julia Vogel

Tigers

By Julia Vogel