Los ciclos de vida de los mamíferos (Mammal Life Cycles)

Many insects hatch from eggs and molt several times as they grow bigger. Others, such as butterflies, undergo a complete metamorphosis. A common science curriculum topic, insect life cycles may be confusing because of these differences. However, this book breaks down these cycles into easy-to-understand steps in both accessible language and colorful diagrams readers can turn to for review again and again. The most important vocabulary needed to talk about insect life cycles is further explained in fact boxes and an extended glossary.

"Some things are so huge or so old that it's hard to wrap your mind around them. But what if we took these big, hard-to-imagine objects and events and compared them to things we can see, feel and touch? Instantly, we'd see our world in a whole new way." So begins this endlessly intriguing guide to better understanding all those really big ideas and numbers children come across on a regular basis. Author David J. Smith has found clever devices to scale down everything from time lines (the history of Earth compressed into one year), to quantities (all the wealth in the world divided into one...

Claudia knows she has no place in Joseph's aristocratic world. Now, that world is about to be rocked by scandal, an arranged marriage, a secret that will shock the town, and a man from Claudia's past conspiring to drive the lovers apart. Joseph is determined to make Claudia his at any cost, breaking every rule for a love that is everything he has ever wanted.

In each book in this series, a boy speaks about one of four dinosaurs. The text stimulates the reader’s imagination and considers the characteristics of each dinosaur, highlighting the features that distinguish it from the others.

Computer science is all around us, at school, at home, and in the community. This book gives readers the essential tools they need to understand the computer science concept of simulations. Brilliant color photographs and accessible text will engage readers and allow them to connect deeply with the concept. The computer science topic is paired with an age-appropriate curricular topic to deepen readers' learning experience and show how simulations work in the real world. In this book, readers learn about American Revolution reenactment and how it simulates events from the past. This nonfiction ...