Poemas y frases de un corazón errante

In My Friend Has Down Syndrome, beginning readers are introduced to different characters who have Down syndrome, how Down syndrome may affect their actions, and how we can be good friends to people who have Down syndrome. Vibrant, full-color photos and carefully leveled text engage young readers as they discover how to empathetic and inlude all kinds of friends.

Si usted es de los que piensan que apenas hay relación entre la condición humana y las matemáticas, tiene que leer este libro. En él se encontrará con la mitología, la música, la guerra, la astronomía, la literatura... y las matemáticas viajando juntas a través del tiempo y del espacio; desde Egipto, Mesopotamia, la Grecia clásica o la Constantinopla asediada por los turcos hasta la Polonia ocupada por los nazis, Los Álamos de las primeras bombas atómicas o Hiroshima y Nagasaki. Un periplo fascinante desde el centro de la Tierra a los planetas exteriores del sistema solar, del...

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

This is a hopeful conservation story about an endangered family of Mexican gray wolves who live in a sanctuary in the Pacific Northwest and their journey that leads to their successful release to the wild in Mexico. This nonfiction story, illustrated with color photography, follows the lives of a Mexican gray wolf family, known as lobos, with pups born at a sanctuary in Washington State near Mount Rainier, to their release into the wild in Mexico. Through this hopeful and engaging story of conservation, kids learn about wolves--their characteristics and behavior--and the challenge of...