¿Qué son los peces? (What Are Fish?)

La Ciudad de Massi ha sido arrasada, un auténtico caos se ha desatado en sus calles. Edificios en llamas, aldeanos corriendo como locos, y una tétrica banda sonora compuesta por gritos de terror y sirenas de ambulancia. ¿Quién ha podido provocar semejante apocalipsis? Aunque parezca mentira, el propio Massi es el principal sospechoso. Varios testigos aseguran haberlo visto. Sí, sí, era él, claramente: con su inconfundible armadura negra y amarilla. Massi no recuerda casi nada de la noche anterior: un atracón de jalapeños lo dejó completamente grogui. Solo recuerda haber hecho un...

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.

"Describes the U.S. Army in action, including their vehicles, weapons and equipment, and jobs."--From source other than the Library of Congress

This guide gathers a selection of more than 500 species of vertebrate animals cataloged and arranged in colored illustration. It is an exhaustive and complete guide that provides precise information about each species, and that captures all the beauty and diversity of the vertebrate world in spectacular design and with enthralling visuals.