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....

Many children have heard of dams, but not many know what they are. This book engages young readers as it reveals the many fascinating aspects of the worlds largest dam, which was built on the border of Paraguay and Brazil.

This book tells the story of farmers and life on a farm. What do farmers do? What tools and equipment do they use? Who helps them? Livestock, crops and daily chores are perfectly captured in descriptive photography. With full-color, full-page photographs throughout plus straightforward and engaging text, the I Want to Be ... series is an appealing introduction to a broad spectrum of occupations. The series gives young children a realistic insight into the working day of adults. Easy-to-read captions and color photographs of women and men from different cultures help children understand what's ...

The author/poet imagines all of the things a child can do, and then speculates on the many vocations the child has the option of choosing.

La celebración de navidad contiene un lenguaje universal, es aquella celebración que se festeja dentro de todos los hogares del mundo. Los clásicos villancicos vuelven a escucharse en una vela de nochebuena, las estrellas vuelven a iluminarse en el cielo, el fervor de diciembre estremece nuestros cuerpos, y las familias regresan al lugar de origen para reencontrarse una noche más. La importancia de la navidad es fundamental dentro de nuestras vidas, simplemente es la consolidación de los perpetuos valores: fraternidad, voluntad, libertad, esperanza, empatía y amor. Aquellos valores que...