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.

No puede ser que en lo referente a nuestra economía personal, la mayoría de nosotros vivamos a la deriva, a merced de los vaivenes de un sistema capitalista totalmente caduco, el cual se nutre de que el dinero pase de las manos de los que menos tienen a los que más tienen. De ti depende sobrevivir a un sistema que está acabando con las clases medias, y que se ha convertido en una auténtica fábrica de pobres gobernada por unos cuantos ricos. Tu educación financiera no es un derecho, es una obligación, ya que nadie va a cuidar mejor de tu dinero que tú mismo.

When rocks change because of environmental conditions, the new rocks are called metamorphic rocks. A rock's chemical or physical makeup may change because of conditions such as temperature, stress, or pressure. Your readers will learn fascinating facts including where metamorphic rocks are most commonly found, the different types of metamorphism, and how metamorphic rocks are identified. Full-color photographs depict these rocks in nature. A helpful graphic organizer shows how these fascinating rocks form.

A team of second grade students has been tasked with designing the layout for Field Day. They'll need to make sense of measurement in order to make sure that everything goes smoothly! Will Field day be a fun day, or will it be a flop? This fiction math book seamlessly integrates the teaching of math and reading, and uses real-world examples to teach math concepts. Text features include images, a glossary, an index, captions, and a table of contents to build students' vocabulary and reading comprehension skills as they interact with the text. The rigorous practice problems, sidebars, and math...

The sun is responsible for all life on Earth, but what exactly is it? Our star is an amazing force that can be as dangerous as it is important. From solar flares to the threat of blowing up altogether, the sun is one of the most interesting things in our solar system. Readers take a trip to the sun to see how it works and exactly what it is made of. They’ll learn about the life cycle of a star and see just how long we have until we have to find a new planet to call home. Don’t worry, they’ll be happy to learn that (hopefully) we have millions of years left!