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

This Book Uses Repetition, Simple Sentences And Supporting Images To Familiarize The Beginning Reader With Cylinders.

Even as the world changes, skilled labor will always be needed. There's nothing quite like the ability to create things with your skills and your own hands. Carpenters use their skills to build things we use every day, including items such as furniture, buildings, and bridges. They read building plans, choose materials, design, and create. This book teaches kids that to become a carpenter, you have to use a lot more than a hammer and nails; you need your brain too. Photographs and diagrams enable readers to make key connections with the text.

Un recopilatorio de Súper Chistes para niños sobre las vacaciones. ¡No dejarás de reír en todo el verano! ¿Qué es lo más divertido que te puede pasar en vacaciones? ¿Tirarte a la bartola? ¿Hacer ahogadillas a tu mejor amigo o amiga? ¿Subir a aquella montaña que tanto le gusta al monitor del campamento...? Pues no. Lo más divertido que te puede pasar es... ¡leer este recopilatorio de Súper Chistes sobre los mejores días del año: las vacaciones!

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.