Tigre dientes de sable (Smilodon)

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.

En esta obra se reúnen los más interesantes relatos de las principales culturas nativas de México, en los cuales el autor ha puesto mucho esmero para que el lenguaje resulte ameno y moderno. En algunos de estos mitos y leyendas resalta el humorismo y en varios de ellos el amor es el tema central. Esta selección nos da una amplia visión del mundo de los antiguos mexicanos y nos trae rumores de tiempos idos con los que, sin embargo, todavía podemos identificarnos, pues las preocupaciones, temores, angustias y alegrías del ser humano cambian muy poco con el paso del tiempo. Entre los...

Rudy can't find his favorite sweater. He's looked everywhere: inside the house, outside, and in the apartments upstairs and downstairs. In the kitchen, in the bathroom, here, there . . . where could it be? This enchanting story has flaps, pages with cutouts, and numbers to count.

California is home to the largest school system in the country. Students will learn about the history of California’s schools and higher education system with this nonfiction text that builds students’ reading skills and social studies content knowledge. The intriguing primary source maps, letters, documents, and images provide authentic nonfiction reading materials and keep students interested in learning. Text features include a glossary, index, captions, sidebars, and table of contents. This book connects to California state studies standards and the NCSS/C3 Framework and features...