¡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.

Read Along or Enhanced eBook: 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!

Una fantástica serie de biografías ilustradas para conocer a los personajes más destacados de la historia de una forma didáctica y divertida. Leonardo Da Vinci fue uno de los pintores más importantes de la historia, además de un talentoso músico, y un estupendo científico e inventor. Construyó máquinas voladoras, submarinos, ¡e incluso helicópteros! Sin embargo, le costaba mucho terminar las cosas que empezaba. Por eso, hoy en día solamente lo conocemos por sus obras más famosas, pero hay mucho más... Descúbrelo todo en este libro.

What has a head, two tails, and shoots across the sky? A comet. Coming from the far edges of the solar system, most comets travel around the Sun, while meteors appear as flashing streaks of light in the night sky. Explore these amazing celestial wonders as they zip through space! This book looks at the difference between comets and meteors and their effects on Earth. The physical characteristics of each are identified in detail. This book won’t come crashing down! It’s filled with fun facts that give additional information on this exciting science topic. This book allows students to use...

At the top of his career as a writer of suspense, Abelardo Rueda is involved in a series of murders that exactly follow the plot of his latest work. The homicides hide chilling secret information. That information, along with an intimate secret, will give a twist, immersing guests in a labyrinth where anyone can be a victim or executioner.

El sexo es todo. El sexo es nada. Así que, ¿cuál es la verdadera descripción? Por la manera en que mucha gente habla, pensarías que el sexo es como la comida, o comemos tres veces al día o nos morimos del hambre. Por otro lado, sabes que el sexo definitivamente no es poca cosa. Es demasiado potente, demasiado instintivo para sencillamente negarlo. Tarde o temprano, todos deben lidiar con ello. Este libro ofrece un acercamiento enteramente personal hacia tu sexualidad y Dios. En otras palabras, el sexo es más que pelvis y formas de conectarse. La sexualidad esta tejida a través de todo ...