El gato

Integrate science, history, and math into literacy lessons with these high-interest, Spanish-translated books. Topics such as space exploration, endangered animals and money management are designed to engage and inform students. Sophisticated graphics, interactive text features promote critical thinking hand help students build vocabulary and increase visual literacy skills.

Explains the basic science of flight, the problems of getting vehicles into the air, different types of engines, and aircraft design, and includes instructions for making aircraft models.

Planck consideró como tarea científica suprema la búsqueda de las leyes que rigen el absoluto, el invariante oculto en la realidad externa. Le cupo el privilegio de descubrir uno de esos elementos universales: el quantum de acción, la constante h.

Before Texas was part of the United States, it was a nation of its own. After gaining independence from Mexico in 1836, Texas declared itself a republic. Interesting features, including a timeline and a map, guide readers through this conflict-filled period of Texas history.