Cómo podemos utilizar la palanca?

Define planos inclinados, explica sus funciones, y sugiere experimentos sencillos para demostrar cómo funcionan.

Follows The Thirteenth Amendment That Freed The Slaves, The End Of The War, And The Death Of President Abraham Lincoln.

Young students will be enthralled with compelling portraits of famous figures who devoted their lives to improving the world. Includes historical photos and illustrations.

Julia nunca hubiera imaginado que podría vivir tantas aventuras aislada en una habitación de hospital. ¡Ni que aprendería tantas cosas! Y todo gracias a su amigo Bruno, a su abuelo y, sobre todo, a un personaje muy especial que resultará ser una auténtica autoridad en el mundo de los sueños. Una historia tierna y emocionante.

Este libro perteneciente a la Colección "Niños Artesanos", invita a niños y niñas a conocer la cultura Rapa Nui, a través de su cultura material, en específico, su artesanía, mostrando cada objeto y proponiendo su replicación con materiales de fácil acceso.

California grew by leaps and bounds between the Gold Rush and 1900. People from different backgrounds emigrated to California from across America and around the world in search of a new life. This primary source reader focuses on immigration in California from the time of the Gold Rush to the end of the nineteenth century. Primary source documents allow students to see different points of view, and help students look at the world and current issues with a historical lens. This Interactiv-eBook builds literacy and social studies content knowledge through the use of intriguing primary sources...

Collection of 50 traditional children's folk songs in English, with standard scores and TAB's. Graphic of every chord. A very good resource to start learning to play the ukulele, read music and learn English. Easy level. Great musical resource for the music classroom. Enjpy great music moments in family. Songs included: A tisket, a tasket – Aloha oe – Alphabet song – Amazing grace – Are you sleeping brother John ? – Aura Lee – Brahms’s lullaby – Buffalo gals – Down by the riverside – Five little monkeys – Happy birthday – It’s raining, it’s pouring – Kumbaya my...