Patinetas en acción

Why do continents matter? From economics to weather science—and everything in between—knowing the characteristics of the continents expands readers’ perspectives in every school subject. This fundamental information is a building block of many future lessons and an essential part of elementary education. This book presents a focused, clear, age-appropriate look at Earth’s continents that young readers are sure to find both informative and interesting. This volume is also packed with colorful maps that are labeled and explained to foster young readers’ comprehension of this important...

An introduction to what cowboys do, what their day is like, what they wear, what tools they use, and how people can become a cowboy.

This compare-and-contrast text explains the technology we seldom feel we can go without; the phone, computer, and camera. Readers learn the difference between old and new versions of each. New vocabulary such as 'stationary' and 'portable' are introduced. A picture-word glossary is included.

What causes sound? How does sound travel? Sound begins when matter vibrates. Without this vibration sound could not move and nothing would make any noise. Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments that will appeal to readers of all ages.