Cristobal Colon

Students will gain a deeper understanding of the Cold War by delving into major social studies topics in this project-based examination. The volume presents a series of broad questions touching on major themes in the social studies curriculum. Each question is accompanied by several paragraphs examining that question in the context of the Cold War, as well as a detailed project that prompts readers to think critically and present their findings or opinions in a particular format, such as a poster with side-by-side comparisons, a persuasive essay, or a class presentation.

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...

Simple text and photographs describe dragonflies, including their physical characteristics, behavior, and life cycle.

PROBLEMAS "ACERTIJOS" MENTALES (300): Para resolver mentalmente, sin lápiz ni papel y en un tiempo prefijado, generalmente unos cuantos segundos. PREGUNTAS CON RESPUESTA (500): Preguntas cortas, todas ellas con respuesta, que generalmente nos dejan parado y no solemos contestar de forma rápida por temor a equivocarnos. Una vez vista la solución suelen parecer mucho más sencillas que al principio. Son las típicas de los concursos televisivos, en los que el concursante se pone muy nervioso, porque se le acaba el tiempo y no le sale a flote la respuesta. También pueden servir para jugar al ...