¡Sin resolver! Casos misteriosos

Readers won't have to disassemble their favorite toys to discover what makes them work. This book explores electric, magnetic, and motion-powered toys from design to function. It introduces readers to the six simple machines and explains how they use force and motion to do work. Not every toy is a technological marvel. Readers learn about time-honored favorites including the rocking horse, Slinky, and rattles.

Invite readers along on the preparations for a soccer tournament! With informational, Spanish-translated text, vibrant photos and charts, children are engaged from cover to cover while utilizing mathematical skills to increase understanding of all aspects of soccer, including sportsmanship and tournaments.

Learn the secrets to artful cupcakes, oven-fresh bread, and other delicious baked goods in this delightful nonfiction title. Readers will learn how mathematics helps bakers measure their ingredients to make tasteful treats. Featuring vibrant images and charts, informative text, and fun, intriguing facts, this Spanish-translated nonfiction book will leave children fascinated by all the details that go into baking their favorite treats--like doughnuts and cookies!

Siempre está encima de nosotros y por eso parece que lo sabemos todo sobre él, pero el cielo encierra un tesoro escondido: el secreto del tiempo y el principio de todo. Mirar hacia arriba en busca de estrellas y planetas se convierte así en un viaje increíble en busca de los límites del Universo hasta llegar al Big Bang, la explosión que dio origen a todo. Su destello de luz ha llegado hasta nosotros como una voz del pasado. Escuchándola, descubriremos que estamos hechos del mismo material del que están hechas las estrellas, que nacen, brillan y mueren, como nosotros. En este...

Explica a los adolescentes los conflictos emocionales, los cambios faisicos, las opciones, las opiniones sociales, los criterios maedicos, y las consideraciones legales relacionados con un embarazo no planeado, y les aconseja caomo enfrentarse con estas situaciones.

A stinky look at the history of personal hygiene reveals fascinating facts, such as the invention of the toilet, how many times Queen Elizabeth I had a bath, how the first sewers were built, and much more.

In English and Spanish, help children understand their fears and teach them simple coping skills. It is natural for children to feel afraid sometimes. In this English-Spanish bilingual book, encouraging words and supportive illustrations guide children to face their fears and know where to turn for help. Little ones also learn simple ways to help themselves. Includes a special section for adults, with ideas for supporting children when they feel afraid and a list of additional resources, in both English and Spanish. ​The Learning to Get Along® Series The Learning to Get Along series helps...