In this book, 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 everyday life--from taking body temperatures to regulating how cool or warm our homes are.
In this book, 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 their names, and the different calendars around the world. Sidebars instruct math by showing readers how to add and subtract days.
In this book, 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 also learn how to read analog and digital clocks to tell time. Sidebars instruct math by showing readers how to add and subtract hours.
A basic introduction to the planet Mars, its size, composition, and place within our solar system.
Maisaura's name means 'good mother lizard.' Find out why scientists believe these dinosaurs were such good moms.
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.
Readers learn how this simple machine makes it easier to lift, lower, and open things. They learn the three types of levers: first-class, second-class, and third-class. By the end of the book, readers know the difference between complex and simple machines and how levers are used in everyday life to make work easier.
A basic introduction to the planet Jupiter, its size, composition, and place within our solar system.
Readers learn how this simple machine makes it easier to move things to different levels. They learn how flatter slopes use less effort than steeper slopes. By the end of the book, readers know the difference between complex and simple machines and how inclined planes are used in everyday life to make lifting and lowering objects easier.
Iguanodon was one of the first dinosaurs that had the ability to chew its food. Learn more facts about this unique and very social dinosaur in this interesting book.
Learn along with Opal Owl and Stew Rabbit how to find, check out, and return e-books from a library using an e-reader.
Watch as Opal Owl and Stew Rabbit learn to use search engines to find information online, evaluate online resources, and discover the difference between fact and opinion.
What makes a shadow? Why do some things make shadows and others don't? How do shadows change? This simple, colorful book inspires children to think in a new way about the shadows around them.
A basic introduction to planet Earth, its size, composition, and place within our solar system.
Scoop up some dirt. It's made of many things. What are dirt's ingredients? How is it made? What happens inside it? This simple, colorful book will make kids think differently about the dirt beneath their feet.
Compsognathus was a tiny dinosaur not much bigger than a chicken. Find out how this little animal survived in a world filled with much larger creatures.
This fun, colorful book describes basic rules for what to do and what not to do to be safe on your cell phone and online.
This fun, colorful book describes basic rules for what to do and what not to do to be safe in inclement weather.
Apatosaurus was one of the biggest animals to ever walk the planet! Find out more about the Apatosaurus's life, what it ate, and what scientists have learned from its fossils.
Allosaurus was one of the biggest meat-eating dinosaurs to ever live. Learn what this huge hunter looked like, ate, and did all day when it roamed the land.
A very simple introduction to the life and accomplishments of noted physicist Albert Einstein.