Cómo funcionan los juguetes (How Toys Work)

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther. This 6-Pack includes six...

Readers may never expect that they might free fall to Earth, but if they have ever dived into a pool, that's exactly what they've done. This book shows readers how Newton's three laws of motion affect divers, skydivers, and mountain climbers' movements. Readers discover who uses gravity, and who works against it, and all other forces that contribute to a successful dive or climb. After reading this book, readers can decide if they will ever be interested in engaging in one of these extreme sports.

Read Along or Enhanced eBook: Invite readers to see what goes on behind the scenes at a school carnival! With informational, Spanish-translated text, vibrant photos and helpful charts, children are engaged from cover to cover while utilizing mathematic skills to learn the basics of planning, income, estimates, and budgeting.

¿Te gustaría saber cómo son las casas de los animales? ¿Siempre viven en los nidos y madrigueras que construyen o también aprovechan los sitios que les da la naturaleza? A Bruno y a su hermana Irene también les gustaría saber dónde viven y cómo son las casas de los animales. Acompáñalos en este viaje y descubre cómo es la casa del pájaro carpintero, o la de la abeja, o la del elefante? Incluye además una guía para padres con información adicional.

La obra incluye tres (3) textos fundamentales del autor: Fundamentos de disen̆o bi-dimensional, Fundamentos de la forma bi-dimensional y Fundamentos del disen̆o tri-dimensional, incluye un glosario, más de 900 diagramas y documentos gráficos apoyan la interrelación entre las diferentes dimensiones del disen̆o.

Have you ever wondered where inventors get some of their ideas? This answer may surprise you: sometimes the inspiration comes from plants! Learn how some tiny plants have made a huge difference in the world.

There are many steps in the nitrogen cycle that include difficult concepts and words: denitrification, prokaryotes, ammonia, and more. With the help of this understandable book, even struggling readers will grasp this cycle of nature. Low-level language, fact boxes, and an extended glossary provide readers with essential vocabulary explanations that allow them to further understand each step of the cycle. Full-color diagrams aid readers' comprehension as they move through the cycle from start to finish, and then around again.