La carta de derechos

Defines pulleys, explains their functions, and suggests simple experiments to demonstrate how they work.

Eco-Friendly Energy Is Explained. The Most Current Information Is Provided While Establishing The Understanding That It Does Not Take Much To Make The World A Better Place.

Defines screws, explains their functions, and suggests simple experiments to demonstrate how they work.

Acompaña a Geronimo y ayúdale a salvar un bosque y... ¡el planeta entero! Por medio de una divertida historia de Geronimo, iremos descubriendo curiosidades sobre nuestro planeta, pero no sólo eso, sino que también aprenderemos datos curiosos y, lo más importante, cómo salvarlo.

From war and death to school and gender equality, the Sociedad series discusses many serious issues in a way that can be easily understood by children. Although many of the situations and examples are specific to Mexico, these books can be applied to a general readership, particularly one of Hispanic origin. Reflecting on modern sciences, particularly biotechnology—from its limitations to its advances—this perceptive study answers many questions concerning cloning and genetically modified organisms, such as Why do scientists work in these arenas? What are the benefits of this technology?...

Teach students the significance of the capital of the United States, Washington, DC. This Spanish-translated nonfiction book introduces readers to important buildings and monuments in Washington, DC, and helps students understand the city's importance and connection to American history. Primary source images and supporting text work together to engage young learners from cover to cover.

16 vidas extraordinarias de personas que luchan cada día por proteger el medioambiente. 16 cuentos para los pequeños héroes que salvaran nuestro planeta. ¿Qué tienen en común las estrellas de Hollywood Emma Watson y Leonardo DiCaprio con Pierre Rabbi, considerado el Gandhi de la agroecología, el estilistaTiziano Guardini o la ganadora del Premio Nobel Wangari Maathai? Todos ellos muestran su compromiso activo para salvaguardar el medioambiente y promueven un estilo de vida ecosostenible. Además, forman parte de esta antología verde con la que descubrirás 16 biografías, 16...