Tecnología para todos: Wifi en todo el mundo (Technology For All: Wi-Fi Around the World)

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.

A community is a group of people living or working together, and a family is a group of people who take care of each other. Through this relatable and informative book, readers will understand what it means to be part of a family community. The age-appropriate language imparts the principles of community while engaging readers by providing accessible real-world examples of how children can participate and contribute to their family community.

From Mexico to the tip of South America, Latin America features varied scenery, including deserts, grasslands, plains, and mountains. Some are extreme: The Andes is the world's longest mountain range, and the Atacama Desert has not had rain for over 400 years! Latin America's remarkable landscape is an essential factor in its surprisingly different climatic zones. This insightful volume offers a comprehensive tour of the many vibrant countries of this fascinating region, highlighting its most striking areas in vivid photographs. It is also an inviting exploration of geography, natural...

With gentle encouragement, this book teaches children that they can think before speaking, choose what to say and how to say it, and find positive ways to respond when others use unkind words. The importance of saying “I’m sorry” is reinforced. Includes tips for parents and caregivers.