Oviraptor's name means 'egg thief.' Learn why scientists made a mistake when they named this dinosaur!
A very simple introduction to pianos, their history, what they sound like, what they look like, and how they are played.
A basic introduction to the planet Neptune, its size, composition, and place within our solar system.
A basic introduction to the planet Mercury, its size, composition, and place within our solar system.
In this book, 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 also learn about balances, scales, and estimating weights.
In this book, readers learn what volume is and why and how it is measured. They learn about the US customary system and the metric system, where each is used, and the units of measurement in each system. Readers also learn about volumes of liquids and solids.
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 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.
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.
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.
Explains where milk comes from and other main ingredients in ice cream; discusses how those ingredients are processed and packaged as ice cream; and how ice cream becomes available to consumers.
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.
Explains how leather and other materials are used in football production; discusses how materials are put together to make footballs in a factory; and how footballs become available to consumers.
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.
Explains how dall sheep live and grow; discusses their migration, its purpose, and its route; and lists threats dall sheep may face on their migration.
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.
Explains how wheat is farmed and processed into flour; discusses how ingredients are mixed and dough is baked into bread at a factory; and how bread becomes available to consumers.
