Conservación de la masa (Conservation of Mass)

Light can travel faster than anything else in the universe. But what exactly is light, and where does it come from? This nonfiction Spanish book teaches students all about light, and introduces them to important scientific concepts and vocabulary terms like infrared, ultraviolet, photos, and visible spectrum. The intriguing images, detailed diagrams, and stimulating sidebars will keep students connected to the text. The fun lab activity provides a real-world learning experience that supports STEM instruction. Aligned to state and national standards, the leveled text supports differentiation....

We use machines every day, but most of us don't understand how they work. When they break down, most of us have no idea how to fix them. Mechanics are the masters of machines. Readers learn that mechanics work on vehicles, including cars, boats, and buses. They use special tools to take them apart and fix what's wrong, and they use their experience and technology to diagnose problems. They often work long hours, sometimes in bad weather, to get us where we need to go. Your readers will see that mechanics keep our world moving and growing.

Una manera rigurosa, pero amena de explicar a los chicos qué es la religión. “Cada religión es una especie de declaración de amor. O lo que es lo mismo, el sentimiento religioso es lo más personal que posee un ser humano.” ¿Sabes qué es la religión? ¿Has pensado alguna vez que muchas personas creen en la existencia de algo superior? ¿Quién es Dios? ¿Se llama igual en todas las religiones? ¿Es el mismo para todos? ¿ Existen muchas diferencias entre las diversas religiones? Este libro te ayudará a responder a todas esas preguntas y a través de un viaje fascinante por el...

With life-like illustrations and simple text, books in this series introduce children to different dinosaurs and the unique characteristics. Children learn the features of each dinosaur, what they ate, and whether they were predator or prey to other dinosaurs. The books also introduce fossils and how they play a role in our knowledge of dinosaurs' existence.

The Focus In This Title Is That It Is Sometimes Hard To Have Integrity. Having To Always Do The Right Thing Or Say You Are Sorry Can Be Hard To Do But Makes You A Better Person And Makes Other People Think You Are, Too. Complete K-5 Social Skills Collection. Paired With A Fiction Social Skills Title.