Inteligencia artificial: computadoras y máquinas inteligentes (Artificial Intelligence: Clever Computers and Smart Machines)

Explore the lifecycle of a butterfly and learn about the transformation of caterpillars into beautiful butterflies. The connection to language arts is the rich vocabulary related to butterflies, caterpillars, and their transformations.

Un sorprendente viaje por diez rutas que, más largas o más cortas y en diferentes épocas, dieron forma al mundo que conocemos hoy. Con este libro cruzarás el puente de Beringia hacia América con los primeros pobladores de ese continente y seguirás a los animales salvajes por la ruta migratoria del Serengueti. Recorrerás la red adoquinada de calzadas romanas de Inglaterra y la maravilla de la ingeniería del Gran Camino Inca, que permitieron el florecimiento de dos imperios. Conocerás a los pioneros que arriesgaban su vida en busca de oro por la remota y helada ruta de los Chilkoot, a...

The values and traditions of Mexicans at home, school, and work are explored as well as how life differs in urban and rural settings.

Quick Minds is an exciting, six-level course for young learners in Spain that enhances your students' thinking skills, sharpening their memory while improving their language skills. The Activity Book mirrors the content of the Pupil's Book. It practises the core vocabulary and grammar and consolidates skills development, with a variety of exercise types. 'Do that!' sections provide opportunities for speaking, while the Review and Culture sections provide extra listening practice and 'Get it right!' pages cover problem areas for Spanish speakers. A Grammar Practice section at the end of the...