How Do You Measure Time?

A little child asks the "big question" (grande question) that is never formulated: why are we on earth? and get answers from different people.

Bright stars twinkle in the night sky. Have you looked up into the sky on a clear night and seen these tiny points of light? Did you know that there are many kinds of stars in space? Find out all about them in this Spanish-translated book.

Por las viejas calles y por los tranquilos canales de Venecia, se mueven unos curiosos seres envueltos en aires de misterio. Adoptan la forma de gatos, pero hay quien dice que en realidad son leones. Todos tienen un secreto que contar, una historia que puede llegar, enviada por el mar, a cualquiera de nuestras playas dentro de una botella de cristal.

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.