Yo pido disculpas (I Say I'm Sorry)

With simple examples that are easy to relate to, this basic review of some of the building blocks of economics will help readers easily grasp the concepts. With language that is conversational without being too casual, readers are engaged throughout as they learn about not only these basic concepts but how they fit into the whole economic scheme of things, such as where goods come from. Readers will learn about the three factors of production, as well as what happens when resources are lacking and how that influences the entire economy.

This Spanish-language series presents the complete range of math concepts and skills students are expected to master during the first grade. The series moves sequentially, from easiest to hardest concepts, with each book covering a different math topic. The first volume reviews the math concepts students learned in kindergarten. The next six books cover counting, adding and subtracting, tables and graphs, money, patterns, and measuring. The eighth volume is a summary of the math concepts students have studied throughout the year. Each book presents situations that show the relevance of math...

We use machines every day, but most of us don't understand how they work. When they break down, most of us have no idea how to fix them. Mechanics are the masters of machines. Readers learn that mechanics work on vehicles, including cars, boats, and buses. They use special tools to take them apart and fix what's wrong, and they use their experience and technology to diagnose problems. They often work long hours, sometimes in bad weather, to get us where we need to go. Your readers will see that mechanics keep our world moving and growing.

¿Alguna vez te han sucedido cosas que no tienen una explicación lógica? ¿Cajones que se abren solos, cosas que se pierden misteriosamente, risitas que no se sabe de dónde vienen? A Víctor le acaban de poner gafas y desde el momento en el que sale de la óptica se da cuenta de que ve demasiado bien. ¿Por qué demasiado bien? Pues porque ahora ve unos bichos que antes le resultaban invisibles, los Krippys, que conviven con los humanos y que son responsables de muchas cosas que antes no entendía. Pronto aprende que hay Krippys de mil formas, pero Víctor les ve a todos algo en común y...