Lewis y Clark y la compra de la Luisiana (Lewis and Clark and Exploring the Louisiana Purchase)

"Are you ready for some crazy facts about football? Did you know that Adam Vinatieri was the first kicker to win four Super Bowl rings, Detroit had four teams before the Lions, Don Shula trained five quarterbacks that made it to the Super Bowl, the Buffalo Bills are named after William Cody, and the position of quarterback was introduced in 1880? Discover even more about this popular sport in the pages of this book."

Plants are living things that grow and change. Over time, plants have made remarkable adaptations to suit the habitats in which they live. Simple text and beautiful images highlight how plants have adapted to life in the Arctic, in aquatic environments, and in other habitats such as those in deserts and grasslands.

¡No te pierdas este libro! Un recorrido por la historia de los Juegos Olímpicos, desde sus inicios hasta hoy, en el que encontrarás información sobre disciplinas, participantes, medallas y situaciones curiosas. • Los Juegos de Londres 2012 fueron los primeros en ser transmitidos en 3D. • Río de Janeiro 2016 representa el primer evento olímpico en Sudamérica. México, en 1968, fue la primera ciudad latinoamericana en concretarlo. • Para llevar la antorcha olímpica solo es necesario ser mayor de catorce años y poder recorrer cuatrocientos metros. • El fútbol americano fue...

What causes sound? How does sound travel? Sound begins when matter vibrates. Without this vibration sound could not move and nothing would make any noise. Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments that will appeal to readers of all ages.