Rcords del mundo animal / Records of the animal world

It is the third Monday in January and school is closed. But do you know why? It's Martin Luther King Jr. Day. Turn the pages of this book to find out what dream Dr. King shared with the world, who Mohandas Gandhi was, how one brave woman helped Martin Luther King Jr. change history. Each book in the Holiday Histories series describes one of America's holidays or special days. Explore the history of each day and learn the real reason why it is important. Discover what special meaning each day might have for you.

¡La Dra. Vitamina siempre vive en la cocina, nunca pisa el hospital! Ven a conocer a la Dra. Vitamina, una superheroina que tiene muchas formas y está escondida en casi todos los alimentos que tomamos. Sí, en casi todos menos en esos que en realidad no son alimentos. Una historia divertida y llena de aprendizajes para que los más peques comprendan que su cuerpo es su mejor aliado y que tenemos que cuidarlo para que funcione muy bien y durante muuuuucho tiempo.

Filled with tricks and treats, fun and food, Halloween is a day that children look forward to. At one time two separate festivals, the traditions of each gradually blended into the holiday we now celebrate on October 31.

There are many steps in the nitrogen cycle that include difficult concepts and words: denitrification, prokaryotes, ammonia, and more. With the help of this understandable book, even struggling readers will grasp this cycle of nature. Low-level language, fact boxes, and an extended glossary provide readers with essential vocabulary explanations that allow them to further understand each step of the cycle. Full-color diagrams aid readers' comprehension as they move through the cycle from start to finish, and then around again.