Louis Pasteur

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

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.

Provides The History Of Biofuels, Different Uses, Positive And Negative Characteristics, And How They Will Impact The Future.

Los creadores de la serie Dino historias nos traen ahora Animales prehistóricos. Hace muchos años, en América rondaba un vicioso depredador: el tigre dientes de sable. En formato de cómic, este libro sigue los pasos de un dientes de sable macho que ha sido desterrado de su manada. Desde cómo eran las dinámicas de las manadas y como sobrevivían los exiliados, Dientes de sable muestra cómo podría haber sido la vida de estos grandes y pesados depredadores extintos.

An innovative tool supports high school students and teachers in the area of language and communication. PP.

The art of glass blowing has been around for over 4,000 years! Readers explore the history of blown glass, the tools and equipment that is used, and how it is still practiced today in this engaging, Spanish-translated nonfiction title that features vibrant images and informational text.

This folklore treasure chest is filled with tongue twisters, riddles, poems, songs, and stories. These timeless tales, and the Victorian illustrations that accompany them, highlight the joys of children's daily activities. Text copyright 2004 Lectorum Publications, Inc.