Los ciclos de vida de los peces (Fish Life Cycles)

Many insects hatch from eggs and molt several times as they grow bigger. Others, such as butterflies, undergo a complete metamorphosis. A common science curriculum topic, insect life cycles may be confusing because of these differences. However, this book breaks down these cycles into easy-to-understand steps in both accessible language and colorful diagrams readers can turn to for review again and again. The most important vocabulary needed to talk about insect life cycles is further explained in fact boxes and an extended glossary.

"Mammals are a very diverse group. From whales and dolphins that give birth in the water to platypuses that lay eggs, these life cycles can often seem very different. However, they're very similar. Readers learn the basic structure of the mammal life cycle through simple language and accompanying diagrams that show the cycle step by step. The main content offers a way for struggling readers to more easily learn an important science curriculum topic, but can also be a great review tool for any reader."

La neurocientífica, Nazareth Castellanos, explica a los más pequeños en este maravilloso cuento ilustrado cómo funciona el cerebro y cómo cuidarlo para hacerlo crecer. Todos sabemos dónde está el cerebro, pero ¿para qué sirve? ¿Sabías que está formado por un bosque? Sí, sí, ¡por un bosque de neuronas! ¿Y sabías que esas neuronas se envían cartas entre sí para dar instrucciones al resto del cuerpo? ¡Todo esto y mucho más lo aprenderás junto a Alicia y la coneja Cajal! A través de coloridas ilustraciones, sencillas metáforas y pequeñas cajitas de información, los más...

Elementary readers will get a look into space exploration as they move through this fascinating nonfiction title that has been translated into Spanish. Readers will discover galaxies like the Milky Way, the effect gravity has on the inner and outer planets, comets, asteroids, constellations, and what measures scientists are taking to learn more about the vast body of the universe and more, including the Hubble Telescope and the Mars Rover. With vivid images, intriguing facts, informational text, a glossary, and a list of helpful websites, this text encourages readers to discover what they...

Readers may never expect that they might free fall to Earth, but if they have ever dived into a pool, that's exactly what they've done. This book shows readers how Newton's three laws of motion affect divers, skydivers, and mountain climbers' movements. Readers discover who uses gravity, and who works against it, and all other forces that contribute to a successful dive or climb. After reading this book, readers can decide if they will ever be interested in engaging in one of these extreme sports.

A lo largo de esta entrevista, Armand Mattelart vuelve sucesivamente a las premisas epistemológicas de su aproximación al campo de la comunicación. Explica su elección entre las diferentes teorías. Explicita algunos aspectos que son poco conocidos de su trabajo. En cierto modo, cada uno de los capítulos constituye un espaci o-tiempo que revela, por una lado, las raíces de su conciencia política, el estado de las relaciones de fuerza a nivel internacional, así como los movimientos de ideas en acción, y por otro, la materialidad de su pensamiento y la evolución del campo de estudios...