La luz y sus efectos (Light and Its Effects)

Life Long Ago brings ancient civilizations to life and reinforces important early elementary social studies standards such as time, continuity, and change. Students will learn what daily life was like, how ancient peoples governed themselves, how they communicated, and how the influences of ancient cultures are still felt today.

Do you know the important skills it takes to survive in the jungle? Learn about them in this useful, Spanish-translated nonfiction title. With helpful diagrams, vital tips and instructions, vivid images, and a glossary of useful terms, this title will have readers feeling aware and prepared!

Hay aventuras que, por el sólo asunto que tratan, abarcan toda una vida e influencian a mucha generaciones o a una gran cantidad de personas de una misma época. Durante muchos años se había estado intentando, por parte de los europeos, llegar hasta el Asia y, principalmente, a China. Nadie había podido hacerlo, nadie había partido en este intento y regresado sano y salvo... Hasta que el personaje de este libro lo intentó. Este viajero universal nos relata el ambiente de la Venecia del siglo XIII, los preparativos del extraordinario periplo que emprendió hacia China, las aventuras que...

Deforestation, hunting and global warming have endangered countless species. The orangutan, okapi, giant panda and the blue whale are just some of the 30 species on the brink of extinction that are featured in this book. They need your help. The International Conservation Society illustrates how many of these species are left in the wild, and the latest status regarding their natural environment. You'll learn how you can aid endangered species and help sustain the ecosystems that give them life.