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Defines screws, explains their functions, and suggests simple experiments to demonstrate how they work.

Follows the life and career of the French scientist who proved the existence of germs and their connection with diseases.

The Uses Of Wind Energy Is The Topic Of This Book. Explains The Positive And Negative Impact This Form Of Energy Can Have On Our World.

Ahora en español, la verdadera historia del juguete favorito de todos los niños en el verano, la Súper Pistola de Agua, y cómo fue inventado por accidente. Mientras trataba de crear un sistema de enfriamiento para refrigeradores, Lonnie Johnson inventó sin quererlo el mecanismo de este emblemático juguete. Cuando era niño le encantaban los cohetes, los robots, todo tipo de inventos y, sobre todo, la creatividad. Gracias a su pasión y persistencia por resolver problemas, llegó a ser ingeniero y a trabajar para la NASA. Pero dio el gran salto a la fama cuando inventó la Súper Pistola ...

Step inside a studio and learn what it takes to be an artist! This Spanish-translated nonfiction title engages readers through stimulating facts and vivid images and diagrams in conjunction with a brief background on well-known art movements such as Expressionism, Surrealism, and Impressionism, an interview with a real-life artist, a glossary, informational text, an index, and list of useful sources for learning more about art. This 6-Pack includes six copies of this title and a lesson plan.

Remontando el Mississippi, un clásico del vaquero «más rápido que su propia sombra», firmado por la dupla Morris & Goscinny, en una exquisita traducción argentina. Para volver a leer y reír (y sin perderse ningún chiste).

Our solar system is made up of the millions of objects in the sky above us, including the Sun, moon, stars, and planets. This book examines the four planets closest to the Sun, known as the rocky planets. All four planets, Mercury, Venus, Earth, and Mars are described with information about their atmosphere, landscape, orbits, and Fun Facts that give additional information about each of these rocky planets! This book will allow students to use observations of the Sun, moon, and stars to describe patterns that can be predicted.