How Do You Measure Time?

Conmemorar 75 años de El Colegio de México no constituye un logro menor, pero esta efeméride no basta para justificar un recuento de los triunfos alcanzados. Lejos de sucumbir a las trampas de la autocomplacencia, en estas páginas se busca establecer un diálogo crítico con su historia, así como aprobar elementos de inteligibilidad que promuevan un mayor conocimiento y un esfuerzo renovado por ampliar sus perspectivas de estudio. Los ensayos que aquí se reúnen, ideados para revalorar y recuperar las trayectorias de algunos de los primeros protagonistas de esta historia.

Read Along or Enhanced eBook: Encourage readers to learn about the various animals that need help and what they can do to make a difference through volunteerism in this inspiring. Spanish-translated nonfiction title. Readers will discover different programs and organizations that work to protect animals, animal habitats, and endangered species through vibrant images and charts and informational text. Featuring a list of helpful and useful websites, this nonfiction title encourages readers to take part in animal activism in any way they can--from baking homemade dog biscuits to exploring...

A force is a push, a pull, or a turn. Every force has an equal and opposite force. Forces are always with you! They are all around us. Learn about forces with this Spanish science reader that features easy-to-read text. Nonfiction text features include a glossary, index, and detailed images to facilitate close reading and help students connect back to the text. Aligned to state and national standards, the book also includes a fun and engaging science experiment to develop critical thinking and help students practice what they have learned.

For soccer fans, the unstoppable Cristiano Ronaldo has become a household name. What goes into the making of such a phenomenal player? What was he like when he was young and still learning? This book takes a close look at one of the greatest soccer players in the world right now. Young readers will love to learn about his jaw-dropping achievements and also learn about what shaped him into a record-breaking athlete. Ronaldo's story will inspire both the curious new soccer fans as well as those already bit by soccer mania.