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....

"La Navidad más Maravillosa" comparte con los niños el verdadero significado de la Navidad. Todo comenzó hace mucho tiempo en un lugar llamado Belén. Si te gustaría que tus hijos entiendan que Navidad es más que regalos y comida, este libro puede ayudar. Este mensaje lleno de fe es necesario hoy en día.

Born in Warsaw, Poland, on November 7, 1867, Marie Curie was forbidden to attend the male-only University of Warsaw, so she enrolled at the Sorbonne in Paris to study physics and mathematics. There she met a professor named Pierre Curie, and the two soon married, forming one of the most famous scientific partnerships in history. Together they discovered two elements and won a Nobel Prize in 1903. (Later Marie won another Nobel award for chemistry in 1911.) She died in Savoy, France, on July 4, 1934, a victim of many years of exposure to toxic radiation.

Learn how streets are fixed, sidewalks get added, and new schools are built with this Spanish nonfiction book. Perfect for young readers, the book includes a fiction story related to the topic, a glossary, an additional project, useful text features, and engaging sidebars. This 28-page full-color Spanish book describes the many ways individuals can make changes in their communities. It also covers essential civics topics such as leadership and voting, and includes an extension activity for grade 2. Perfect for the classroom, at-home learning, or homeschool, to explore voting, local...

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...