Los biocombustibles

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.

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

Follows The Thirteenth Amendment That Freed The Slaves, The End Of The War, And The Death Of President Abraham Lincoln.

The scientific method lists important steps in the process of conducting scientific study and research. With detailed images and fascinating sidebars, this nonfiction book explores the scientific method and scientific practices in depth, and introduces students to new concepts, vocabulary terms, and STEM topics. Aligned to state and national standards, the leveled text supports students reading at above-, below-, and on-grade level. The fun lab activity encourages students to think like scientists. Keep students engaged in learning with this Spanish book.

La vida cristiana transcurre dentro de un contexto, y el nuestro es la postmodernidad, una de cuyas características es el cambio constante y acelerado que nos hace cada vez más difícil orientarnos para saber vivir como seguidores de Jesús en el mundo actual. «Líderes Posmo» nos acercará a diferentes personajes de la Biblia; veremos las situaciones y los retos a los que se tuvieron que enfrentar. Así nos daremos cuenta del increíble paralelo existente con la vida actual. De los principios que ellos llevaron a la práctica, obtendremos la sabiduría que necesitamos para vivir como...

Muddy Creek in Edgewater, Maryland is the site of a major makeover. The land around the stream has worn down. Find out what caused Muddy Creek to erode, and the many steps involved in saving it. Created in collaboration with the Smithsonian Institution, this Smithsonian Informational Text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step of the engineering design process and is perfect for makerspace activities. It makes STEAM career connections by...

Colección infantil de la psicóloga Andrea Cardemil sobre el control de emociones en niños y niñas. Todos los niños y niñas a veces sienten miedo. A Filipo le da miedo los ruidos fuertes, a Benito la multitud, y a Amelia hacer algo por primera vez. Descubre cómo logran sentirse seguros para enfrentar la situación.