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Rollerblades, bikes, and cars have wheels and axles that help you get from one place to another quickly. Read Wheels... Read More >>
Readers will discover how, from watching TV and logging onto out computers to fighting disease and zapping food... Read More >>
Ya sea polvorosa o mojada, suave o flexible, en todas partes hay materia. ¡Hasta el aire está formado de materia!... Read More >>
Las cobijas no son calientes. ¿Entonces por qué nos dan calor? Descubre la respuesta y otras curiosidades del calor... Read More >>
Brújulas, imanes, polos magnéticos y motores. Vívidas ilustraciones y textos sencillos exploran la asombrosa fuerza... Read More >>
La energia de la comida hace que te levantes cada dia. La energia de una cascada hace que tu lampara se prenda.... Read More >>
This book simplifies the complex concept of light. It describes the nature of light, how it produces color, and... Read More >>
Forces and motion are key concepts in the elementary science curriculum. This Spanish edition of How Simple Machines... Read More >>
Learn about liquids and discover what happens if you try to squash water, hot to turn a liquid into a solid, and... Read More >>
Understanding the concepts of solids, liquids, and gases is central to the early science curriculum. This volume... Read More >>
Forces and motion are key concepts in the elementary science curriculum. How Simple Machines Work uses easy-to-read... Read More >>