Tratamiento digital de señales

Explores the different types of land on Earth including deserts, seashores, plains and explains why they change.

Many people take the Internet for granted. But there are places that lack Internet access. Being connected helps people connect, and new ideas are being developed and tested to bring the Internet to more of the world. This Spanish nonfiction book will keep students engaged in reading about Internet access as they build their literacy, vocabulary, and comprehension skills. Important text features include a glossary, index, and table of contents. The Reader's Guide and culminating activity require students to connect back to the text as they develop their higher-order thinking skills. Check It...

Si ha de estallar el sol y ha de llevarse este inestable mundo así engendrado, si han de volver los átomos al caos de mil años luz, mil soledades, si el hombre ha de perder su leve imagen, ¿no ha de quedarnos sólo ir conversando esta ocasión tenaz de haberse amado, de haberse en lo fugaz imaginado?

In this bilingual picture book, astronaut José M. Hernández recounts his childhood as the son of Mexican migrant workers and his life-long dream to travel to the stars.