¡Sin resolver! Lugares misteriosos

The need for speed is the motivating factor in this engaging, Spanish book. Readers learn the history of travel from the very slow to the supersonic and beyond, including everything in between. They learn and discover the factors that influence motion for all types of vehicles: land, air, and water alike. They also learn different ways to measure speed and read about energy uses for different vehicles. With greater speed comes greater risk. Readers learn how engineers are always seeking new and better ways to keep people safe as they travel faster and go farther.

From Stonehenge to the Bermuda Triangle, there are many places on Earth that remain a mystery to scientists! Readers will discover these curious places--and more!--as they move through this fascinating, Spanish-translated nonfiction title. This mysterious book features detailed images, informational text, and stimulating facts and theories in conjunction with upper-level features, such as chapter format, a glossary of terms, and an index.

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!

What does this Spanish-translated book, a table, and your big toe have in common? They are all solids! A solid keeps its shape and always has the same volume. Read this Spanish-translated book to learn about solids and how they are different from liquids and gases.

Tony Wolf era el agente más brillante de la historia del FBI, hasta que un día desapareció del mapa y no se volvió a saber de él. ¿Abandonó el servicio activo o fue descubierto y asesinado? De repente un día sale del anonimato cuando rescata a dos niños secuestrados y se desata el caos. La banda de criminales en la que se había infiltrado antes de desaparecer se lanza en su búsqueda, así como la propia FBI, que tiene muchas preguntas que hacerle. Pero Tony está cansado de ser la presa. Tanto la banda de moteros como los agentes del FBI que se han desplazado al pequeño pueblo del ...

Planet Earth gives us the things we need to survive. When it changes, it affects us all. But humans also affect Earth. It’s important that we take care of our planet so that it can continue to take care of us. This Spanish nonfiction book explores the subjects of human ecology and climate change in depth, and introduces students to important scientific concepts and vocabulary like desertification, deforestation, carbon dioxide, erosion, drought, fossil fuels, the greenhouse effect, and more. The colorful images, diagrams, sidebars, and text features will keep students connected to the text....

Cada animal cría a sus hijos de acuerdo a su instinto. Este libro da cuenta de ello en una variada selección de animales que va desde los pingüinos hasta los guanacos, de los monos a las ballenas. En muchas y diferentes formas de crianza, la naturaleza nos enseña que en la diversidad está el secreto de la vida. Each animal raises its offsprings according to their instinct. This book gives an account of this in a varied selection of animals ranging from penguins to guanacos, from monkeys to whales. In many different forms of parenting, nature teaches us that diversity is the secret of...

A simple introduction to the NASCAR driver who is the son of another winning racer, Dale Earnhardt, Sr.