Las Mujeres en la Química

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...

Recounts the life of the Puerto Rican baseball star from his childhood poverty to his career with the Pittsburgh Pirates, and discusses his humanitarian efforts, his untimely death, and his contributions to the sport.

Fruits and vegetables both come from plants. Fruits have seeds. Vegetables do not. Let’s learn more about fruits and vegetables. Paired to the fiction title Planting Seeds.

Los monstruos en este libro ilustrado para niños incorporan texturas diversas para que los lectores disfruten explorando tactos diferentes.