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Learn all about the law of conservation of mass with this Spanish science reader that brings the power of science and informational text to students at a level they can understand. Introduce students to STEM topics and new concepts and vocabulary terms with this nonfiction book that explores the law of conservation of mass in detail. Aligned to state and national standards, this leveled text supports students reading at above-, below-, and on-grade level. The fun lab activity encourages students to think like scientists. Keep students engaged in learning with this Spanish book.

Si te cuelas entre las páginas de este libro corres el peligro de volar a lomos de un dragón, servir de conejillo de indias en una escuela de magia.... Y en cuanto te descuides sufrirás el ataque a traición de sumas y restas (¡de hasta tres cifras!)

¿Cómo de grande es el universo? ¿Podremos algún día viajar a otras estrellas? ¿Qué es un agujero negro? ¡Descúbrelo con este libro! ¿Alguna vez has levantado la vista al cielo en una noche estrellada y te has dejado llevar por la imaginación? Igual en ese momento te has trasladado a mundos que van más allá de lo que podemos imaginar en la Tierra. Algunos con vida, puede que inteligente, y otros completamente inhóspitos e infernales. O quizá simplemente te has preguntado cuántas estrellas hay en la Vía Láctea. Si alguna vez te has hecho alguna de estas preguntas, este libro...

Everything has a place. Things last longer when we take care of them. Showing respect, responsibility, and stewardship are social skills that even young children can relate to—because they have things they value. In both English and Spanish, this book encourages children to pick up after themselves, put things back where they belong, and ask permission to use things that don't belong to them. It also teaches simple environmental awareness: respecting and taking care of the earth. Includes a special section for adults with discussion questions, games, responsibility role plays, and tips on...