¿Dónde está mi jersey?

En palabras del propio Octavio Paz "este libro se fue haciendo poco a poco a través de los años, sin un plan fijo". La edición que hoy se publica se fue gestando durante más de cincuenta años y el título, "Libertad bajo palabra", nombra varios textos publicados a lo largo de la vida del poeta. Un libro que es también una vida, tal como su autor la ha reescrito sucesivamente. La colaboración del propio Octavio Paz, aclarando problemas del texto y señalando las fuentes de algunas alusiones, ha sido definitiva para el establecimiento de esta edición. -- From publisher's website.

How are crayons made? Clear wax is melted in a factory. Once it's melted, color is added to it, it is poured into crayon-shaped molds, cooled, and wrapped in a paper label. Sorted into sets, the brightly colored crayons are boxed and sent in trucks to stores to be sold to you.

Forces and motion are key concepts in the elementary science curriculum. This Spanish edition of How Simple Machines Work uses simple text and full-color photographs to help ELL students understand the principles behind simple machines. Each volume includes three diagrams to enhance comprehension. The text uses authentic language and is designed to build reading skills as well as knowledge of basic science concepts.

There is a contest at a school to design a new playground. The students use blocks to build their models. As they build, they use three-dimensional shapes. Some students build a train out of blocks for the younger students to play on. Can you guess which three-dimensional shape they use for the train's wheels? Read to find out which design wins.