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

This Ever Popular Subject Is Explained In Detail In This Wonderful Book. How The Earth Is Made From Rock, The Three Different Types Of Rock And How They Are Made And Where They Can Be Found. Talks About How Fossils Are Formed From Sediment And What Role That Plays In Helping Us Learn About Life Long Ago. Talks About How These Fossilized Plants And Animals Became The Fossil Fuels That Are So Important To Our Present And Future Life On Earth.

This book uses intriguing primary sources to teach students about rules and why following them is important. The primary source images and simple sentences will engage students in reading and build their social studies content knowledge. For use in the classroom or at home, this Spanish book includes a simple glossary and index to introduce informational text features to young readers and provide additional reading support.

Descubre todos los misterios, trucos y secretos con el libro oficial de League of Legends. Embárcate en un viaje a través de los Reinos de Runeterra en este recopilatorio único de League of Legends, uno de los videojuegos más populares del mundo. Dentro encontrarás: -Una expedición a través de las once regiones, crónica de los conflictos, las rivalidades más arraigadas y las alianzas encubiertas. -Cientos de ilustraciones, incluyendo mapas inéditos. -Todos los detalles sobre los héroes, flora, fauna, arquitectura, política y tecnologías de todos los rincones del universo....

What's hidden in the woods? Look closely through three colored transparent sheets to discover hidden secrets. Start with green and nothing moves. As if by magic each sheet shows animals and plants coming to life. Watch nature's surprises emerge in front of your eyes.