Cosmos en 3D

Interesting facts and experiments explore the dynamics of a race car engine to teach about air flow and drag, safety equipment and roll cages, the fuel system and horsepower, suspension and track bars, internal combustion, why race cars don't have speedometers, how roof flaps are designed like airplane wings, and more.

Crea tu propio album de bodas con Barbie y su amigas usando las pegatinas del interior. Incluye un monton de bellos vestidos y fascinates datos sobre bodas. Las pegatinas faciles de despegar se pueden usar mas de una vez.

¿Cómo son las cosas en el otro lado del mundo? ¿Somos tan diferentes a quienes allí viven? Aquí también nos propone darle una vuelta a esas ideas. La autora nos contó que este cuento nació mientras realizaba unas ilustraciones para El Salvador... ¡y se nota! Su colorido es una hermosa referencia gráfica a ese país de Centroamérica, tan parecido y tan diferente a la Argentina, el hogar de Paula. Alejo, el cuento del niño que juega haciendo mucho ruido, también es obra de esta talentosa autora integral.

Visiting Tulum National Park is like going back in time. The Maya lived there long ago. Learn addition as you count the things they left behind. This Spanish math book combines math and reading skills and uses real-life examples of problem solving to teach subject-area content. The dynamic images, detailed sidebars, practice problems, and math diagrams make learning addition easy and fun. Text features include a table of contents, a glossary, an index, and captions to build vocabulary and increase understanding of math and reading concepts. An in-depth problem-solving section provides...

3 million years ago, men built the first stone tools for hunting. 2 million years ago, men walked in a completely upright position and had already discovered fire. 1 million years ago, men organized themselves in groups... Okay, okay, but what about the women? Where were the women in the meantime?