Desafíos matemáticos

From the water they drink to the trees they climb, kids are connected to the natural world in big and surprising ways. With simple, poetic text and exquisite artwork, this book does more than introduce kids to these connections. It sparks their imagination. It starts conversations, and it delights all ages. Combining the ideas of environmental author Elin Kelsey with the inventive three-dimensional dioramas of artist Soyeon Kim, this remarkable picture book reveals ties that are often sensed yet seldom explained. And in a world dominated by technology, never have these incredible connections...

3 million years ago, men built the first stone tools for hunting. 2 million years ago, men walked in a completely upright position and had already discovered fire. 1 million years ago, men organized themselves in groups... Okay, okay, but what about the women? Where were the women in the meantime?

A detailed, full-color Spanish-language atlas teaches children about different regions of the world and includes games, activities, and fun characters to make learning geography stimulating. Original.

Enamorado de la vida y de las causas de los oprimidos, Neruda, poeta del amor y la libertad (premio Nobel de Literatura 1971), representa y sintetiza todo el vigor y contradicciones de un mundo a la vez muy reciente y antiguo: América del Sur.