Madre Tierra, nuestro hogar

Read about the kinds of jobs that people do as engineers, and how they use math, science, and creative thinking to solve problems.

SHAAAARRRKK! That's probably the last word anyone wants to hear while swimming in the warm blue sea. But most sharks aren't at all what people expect. In fact, those who think all sharks are giant, man-eating killers are in for a surprise. The compelling narrative, colorful illustrations, and captivating facts in SURPRISING SHARKS reveal that sharks come in all shapes and sizes - and probably should be more afraid of humans than we are of them. Back matter includes a note about sharks and an index.

Vivid photographs and bilingual text explain each food group, revealing how each group is important for good health, how to make healthy choices, and fun things children can do to stay in shape.

El maravilloso libro sobre la vida, el universo y casi todo lo demás. Con ilustraciones a todo color y repleto de dinosaurios, terremotos, átomos y muchas cosas más, este libro es una adaptación del best seller mundial Una breve historia de casi todo, de Bill Bryson. Alguna vez te has preguntado... ¿Qué les pasó a los dinosaurios? ¿Cómo de grande es el universo? ¿Cuánto pesa la Tierra? ¿Por qué los océanos son salados? ¿Sabías que cada uno de los átomos que forma tu organismo seguramente que, antes de formar parte de ti, ha pasado por varias estrellas y formado parte de...