Yo soy justo (I Am Fair)

Discover the different ways that people spend, save, and budget their money. In this Spanish-translated nonfiction title, readers are introduced to important personal financial aspects such as savings accounts, putting together a budget and budget analysis, credit and debit cards, and taxes. Through informational text, vivid photos, and helpful graphs and charts that assist in implementing mathematical skills such as percentages, readers will be encouraged to save and spend their money wisely and responsibly.

What do solar panels, waterproof clothing, and window coverings have in common? They are technologies that have been adapted based on studying butterflies! Learn what scientists have learned from butterflies with this Spanish book that will ignite a curiosity about STEAM topics through real-world examples. Created in collaboration with the Smithsonian Institution, this STEAM book features a hands-on STEAM challenge that is perfect for makerspaces and that guides students step-by-step through the engineering design process. Make STEAM career connections with career advice from actual...

Esta guía visual ayuda a comprender los comienzos del universo y del sistema solar, el inicio de las diversas formas de vida en nuestro planeta, el origen africano de los seres humanos y su desplazamiento por los continentes. Un libro que nos descubre nuestra historia en la Tierra y nos explica por qué todos somos parientes.

¿Qué es un “experimento mental”? Como nos dice Martin Cohen, «al igual que los que se realizan en el laboratorio, son pruebas que se conciben con el fin de explorar (o de destruir) las intuiciones que tenemos sobre el funcionamiento del mundo». Este libro imprescindible para todos los amantes del saber, desde los científicos a los filósofos, recopila los 26 experimentos de esta clase más interesantes realizados a lo largo de la historia. Y no es poca sorpresa, para empezar, enterarnos de que toda la ciencia moderna se sustenta sobre los modestos cimientos que establecieron media...