La Energía Solar (Solar Energy)

Follows the life and career of the French scientist who proved the existence of germs and their connection with diseases.

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

This inspiring biographical series ties in with elementary history, science, and social studies curricula, providing teachers with a valuable interdisciplinary resource. With these books, young readers will discover historical figures who devoted their lives to making the world a better place, and changed the course of history. Text copyright 2004 Lectorum Publications, Inc.

Read the fun clues on each page and lift the flaps to discover animals and the sounds they make and learn English words along the way! Full of first words and colorful photographs, Who Am I?/¿Quién soy? is the perfect way to introduce a second language. The carry-along handle makes it easy to read this board book anytime, anywhere!

You re growing up and your body is changing. If you re a girl, you re likely experiencing the start of menstruation, your breasts are making themselves known, and you re noticing new hair that you might want to be rid of. If you re a boy, you may be experiencing something strange as you sleep, or sweating a lot and not wanting to shower. This book is a complete guide to the terrible and marvelous world of puberty."

This book is a comprehensive, practical presentation of the principles of behavior modification and guidelines for their application. It teaches forms of behavior modification ranging from helping children learn necessary life skills to training pets, to solving personal behavior problems.

Reconozco que más de una vez me he sentido un bicho raro. Como que no encajaba, aunque yo me esforzase por hacerlo. Y es una sensación extraña: al final piensas que la gente no te acepta porque tú no haces las cosas bien. Vamos, que todo es por tu culpa... ¿Hola? ¿Cómo se me pudo pasar eso por la cabeza? Por suerte yo he descubierto el secreto para ser feliz, y prepárate, porque lo voy a compartir contigo: no hay nada de malo en ser diferente a los demás. Más bien al contrario. ¡Es algo de lo que estar orgulloso! Así que si tú también te sientes así, ¡bienvenido a mi mundo! Te ...