La historia de los sistemas numéricos: Valor posicional (The History of Number Systems: Place Value)

Jonas y Gregoire son dos amigos de 15 anos. Jonas ve en Suzanne, hermana de Gregoire, el modelo de una juventud revolucionaria y comprometida que a el le atrae mucho. Gregoire ve en la misteriosa Srta. X a su chica ideal. En ambos casos, estos amigos muy pronto aprenderan la decepcionante naturalezade los idolos y el verdadero valor de la amistad. Y cambiaran sus vidas para siempre...

Candles, kerosene lamps, electric lights, and flashlights are all things people have used throughout history to light up the night. Perfect for English language learners, this Spanish book makes it easy for parents and teachers to introduce STEAM and beginner science topics to their youngest learners. Created in collaboration with Smithsonian, this book uses real-world examples to make STEAM topics easier to understand. It features an age-appropriate STEAM activity that is ideal for makerspaces and introduces grade K students to the steps of the engineering design process. It helps beginning...

Eres única, eres luz, eres vida. Pero de alguien más.No pelearé, no me interpondré, mi tributo a ti son mis escritos, mis poemas, estarás por siempre junto a mí, te llevaré conmigo hasta el último de mis días.No eres el amor de mi vida, pero sin duda siempre serás la mujer de mis sueños.

The jaguar is a ferocious animal that roams in areas of dense vegetation. He is the keeper of the American forests. The jaguar is strong, beautiful, famous, vain and a lonely animal. Young readers will be delighted with the jaguar as they learn more about this cat and his habitat.