1000 problemas de química general

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...

A force is a push, a pull, or a turn. Every force has an equal and opposite force. Forces are always with you! They are all around us. Learn about forces with this Spanish science reader that features easy-to-read text. Nonfiction text features include a glossary, index, and detailed images to facilitate close reading and help students connect back to the text. Aligned to state and national standards, the book also includes a fun and engaging science experiment to develop critical thinking and help students practice what they have learned.

La cocina es un lugar excelente para que los pequeños comiencen a descubrir el mundo natural mediante la observación y la experimentación de las frutas y las verduras que comemos todos los días: ¿qué clases de semillas existen? ¿Cuántas formas pueden tener las hojas? ¿Cómo crecen los gajos de las naranjas? En forma de un diario de campo, este libro de actividades invita a los jóvenes naturalistas a responder estas preguntas y pensar en muchas otras, y los anima a cortar, manipular, secar, cultivar, fotografiar, dibujar y coleccionar (y también comer) alimentos que ya tenemos a la...

Presents instructions for a collection of science experiments that demonstrate the principles of electricity and magnetism, including information on batteries, currents, static electricity, compasses, electromagnets, and more.