El mundo como un juego matemático

Grouping and classification are among the first math and science skills that children need to learn. This fun book will challenge children to observe natural creatures to see what makes them the same and different. It presents an interesting way of looking at objects, because the objects may not be exactly the same. For example, birds have two wings, but the wings of different birds may not look similar.

África tiene muchas caras: exótica y misteriosa, peligrosa y cruel, triste y explorada. Pero es mucho más que eso, es el lugar del origen del hombre, una tierra llena de historia y cultura. Es un continente con una geografía variada: 54 países donde conviven hombres y mujeres de culturas diferentes, que se expresan en más de mil lenguas. En África hay muchos países, todos ellos muy diversos, muchas religiones, ciudades populosas, aldeas, grandes líderes, mitos y colores. Estas son las otras Áfricas que se muestran en este libro.

Learn the secrets to artful cupcakes, oven-fresh bread, and other delicious baked goods in this delightful nonfiction title. Readers will learn how mathematics helps bakers measure their ingredients to make tasteful treats. Featuring vibrant images and charts, informative text, and fun, intriguing facts, this Spanish-translated nonfiction book will leave children fascinated by all the details that go into baking their favorite treats--like doughnuts and cookies! This 6-Pack includes six copies of this title and a lesson plan.

Computer science is all around us, at school, at home, and in the community. This book gives readers the essential tools they need to understand the computer science concept of simulations. Brilliant color photographs and accessible text will engage readers and allow them to connect deeply with the concept. The computer science topic is paired with an age-appropriate curricular topic to deepen readers' learning experience and show how simulations work in the real world. In this book, readers learn about American Revolution reenactment and how it simulates events from the past. This nonfiction ...