La carta de derechos

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

One of the skills employers want most in new hires is the ability to speak well. Public speaking can not only advance a person in almost any career but can also help an individual do better in school as well. Following the English Language Arts standards for Speaking and Listening, this book teaches readers why public speaking can be such an effective tool, how to craft a powerful speech, and how to overcome one of the most common problems people have with talking in front of a crowd�stage fright.

Presents profiles of fourteen Latino baseball players who, from 1900 through the 1960s, were pioneers of the sport in their home countries and the United States.

This timeless tale (now available in Spanish) tells children the story of the crucifixion from the viewpoint of Rex, the tree that became the cross Jesus carried to Calvary. Proud and ungrateful at first, Rex learns a lesson in love from the humble and gentle Jesus. With this story, children come to understand the importance of Jesus' sacrifice and the power of his love. El arbol orgulloso se llamaba Rex y se portaba como si fuera el rey de todos los arboles del bosque. Hasta que un dia sucedio algo que cambio su vida y la de toda la creacion. Este relato imaginario sobre la crucifixion llega ...

Born in 1452, Leonardo da Vinci is still, today, considered one of the most talent people to have ever lived. From his world famous paintings and drawings, such as the Mona Lisa and the Vitruvian Man, to his ingenious inventions of the parachute, the helicopter, and the military tank, da Vince was always a step ahead of his time. Discover the origins of a man who refused to be defined by just one vocation. Whether science and engineering or architecture and art, Leonardo da Vinci was the ultimate Renaissance Man.