Algoritmos: la base de la programación de computadoras (Algorithms: The Building Blocks of Computer Programming)

Describes where fossil fuels come from, their uses and forms, the harm they cause to the environment, and sources of renewable energy.

Learn multiplication on a fun-filled trip to the supermarket! The displays, shelves, and layout of a local grocery store provide ample opportunities for students to learn multiplication as they are engaged in reading high-interest content. This Spanish book combines mathematics and literacy skills, and uses practical, real-world examples of problem solving to teach math and language arts content. The full-color images, math graphs and charts, and practice problems make learning math easy and fun. The table of contents, glossary, and index will further understanding of math and reading...

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.

El niño Claudio se fija en las cosas que ocurren en un campamento de verano para niños con poderes sobrenaturales.

Darwin dedicO su vida a los animales y se embarcO en un viaje que le llevarIa a descubrir increIbles cosas sobre ellos. La Tierra estA llena de seres vivos, pero nadie sabIa explicar con certeza tanta diversidad. Hasta que un hombre se embarco en un largo y fascinante viaje e imaginO una respuesta. Esta es la gran aventura que llevO a Charles Darwin a recorrer el mundo, estudiar a los animales y descubrir cientos de especies y cosas muy interesantes sobre ellas. Zarpa con nosotros en este viaje alrededor del mundo y disfruta de una aventura llena de animales, naturaleza y grandes...