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....

Describe el trabajo hecho en la estación de policía, el personal, los procedimientos y programs de los oficiales de policía.

¿Sabías que los antiguos griegos inventaron la democracia, la filosofía, el teatro y los Juegos Olímpicos? ¿Y que fueron precursores en los campos de la ciencia, la medicina, la economía y el urbanismo? ¿Sabías cómo descubrió Arquímedes su famoso principio? Explorar la historia de la Grecia Clásica es descubrir una civilización con una riqueza cultural que no ha dejado de inspirar al mundo occidental. De Zeus a Atenea, de Aquiles a Ulises, los dioses y los héroes griegos están presentes en numerosas manifestaciones artísticas y literarias. Las batallas, los desafíos y las...

By day, Zoe Zhang is a fourth-grade bunny who loves reading books and playing soccer. By night, she's Robin Hoodie, a hero bandit who steals from the greedy and gives to the poor. When a dishonest city official bullies her family, she and her band of Merry Mates fight back. Kids will be captivated by this fast-paced adventure story that will appeal to reluctant readers. This short, 32-page chapter book features colorful, lively illustrations to capture the attention of kids who enjoy stories about underdog superheroes.

Mathematics constitutes ideal material for exercising the art of learning and thinking. For this it is necessary that the classroom has a stimulating atmosphere which requires determined attitudes and beliefs. The book combines theory and practice and responds to questions such as these: to think in the mathematics class? on what does the knowledge of solving problems really consist of? what are the beliefs and which are the most common ones among the students? how to diagnose, evaluate and, in some cases to modify, the systems of beliefs of the pupil?).