Poemas, relatos y reflexiones

Mixtures And Solutions Exist Everywhere And Students Will Learn How Some Materials Mix Easily While Others Won't Mix At All. Gives Examples Students Can Use To Make A Physical Mixture And Gives Detailed Information On How Different Components Make Up Different Solutions.

There is a bright light in the night sky. Sometimes it is round like a ball, sometimes it is a crescent, and sometimes it is not there at all! What is this strange and changing thing? It is the moon, of course! Read all about our moon and the moons surrounding other planets in this Spanish-translated book.

Who were the earliest Americans? When, how, and from where did they enter and spread across the continent? And what is their relationship to modern Native Americans? Anthropologists develop theories to answer these questions based on the evidence they discover. Their theories—and the discoveries that prove and disprove them—are highlighted in this fascinating volume, full of awe-inspiring facts and incredible breakthroughs. Readers will feel like anthropologists and archaeologists themselves as they read about bones and artifacts, and what they reveal about the ancient cultures that roamed...

Traducción de M. López Salvá. Intr. y notas de M. López Salvá y M. a A. Medel. Rev. : R. M. a Aguilar.