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....

This book is a comprehensive, practical presentation of the principles of behavior modification and guidelines for their application. It teaches forms of behavior modification ranging from helping children learn necessary life skills to training pets, to solving personal behavior problems.

Take a trip to New Orleans with a young girl and her family as they attend one of the world's biggest parties: Mardi Gras! Learn all about the history of this fascinating festival as you practice subtraction strategies. This fiction math book combines math and literacy skills, and uses real-life examples of problem solving to teach subject area content. The full-color images, engaging sidebars, practice problems, and math diagrams make learning subtraction strategies relevant and fun. Text features include a table of contents, glossary, and index to increase understanding of math and reading...

A picture-book biography of St. Pedro Claver (d. 1654), a Spanish Jesuit missionary to the New World, who is the patron saint of slaves.

Se sabe, aunque la Iglesia siempre ha pasado de puntillas sobre este hecho, que San Agustín, más tarde Padre de la Iglesia latina, tuvo en su juventud una amante que le dio un hijo al que amó con predilección. Vita brevis es la carta manuscrita que supuestamente Floria, su amante, le escribió al hilo de la lectura de sus Confesiones. En ella, con ironía y sarcasmo, critica a Agustín por haber abandonado el verdadero y auténtico amor humano para entregarse a uno divino, del que poco se sabe.