César

Born in 1927 in Yuma, Arizona, César Chavez lived the hard-scrabble life of a migrant worker during the Depression. Although his mother wanted him to get an education, César left school after eighth grade to work. He grew to be a charismatic leader and founded the National Farm Workers Association, an organization that fought for basic rights for farm workers. In powerful poems and dramatic stylized illustrations, Carmen T. Bernier-Grand and David Díaz pay tribute to Chavez's legacy helping migrant workers improve their lives by doing things by themselves for themselves.

Los héroes de ficción que viajan en el tiempo pueden cambiar el pasado o el futuro. ¿Podrán hacerlo los seres humanos en el futuro? A medida que los científicos aprenden más sobre las personas y el universo, comienzan a darse cuenta de que algunas formas de viaje en el tiempo podrían ser posibles. Fictional heroes who time travel can change the past or the future. Will humans be able to in the future? As scientists learn more about people and the universe, they're starting to realize that some forms of time travel might be possible. Now in Spanish!

Grouping and classification are among the first math and science skills that children need to learn. This fun book will challenge children to observe natural creatures to see what makes them the same and different. It presents an interesting way of looking at objects, because the objects may not be exactly the same. For example, birds have two wings, but the wings of different birds may not look similar.

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.

"El cuerpo humano está formado por diversos sistemas muy complejos: el circulatorio, el respiratorio, el linfático, el digestivo, el nervioso ... Y todos tienen que trabajar en perfecta sincronía para mantenernos con vida y funcionando como lo hacemos. Este libro nos lleva en una fascinante travesía a través de nuestra propia esencia, para que podamos no sólo comprender, sino gozar un viaje asombroso a través de la máquina más importante y sorprendente: el cuerpo humano."--Publisher.