Robert Goddard

Explores numbers and provides information about mathematical concepts including counting, adding, subtracting, and multiplying.

As they say, necessity is the mother of invention, and this book introduces readers to 14 women who invented very useful, helpful items. They include Chicago native Margaret Wilcox who invented the car heater, Indiana native Marion O'Brien Donovan who invented disposable diapers, Pennsylvania native Stephanie Kwolek who invented Kevlar, and Austria-born actress Hedy Lamar whose secret communications systems led to the creation of WiFi, Bluetooth, and GPS.

Take a trip to the Everglades as you practice addition! About one million people visit Everglades National Park every year to see the unique animals, reptiles, birds, and fish that call this unique place home. Students will practice addition within 100 while engaged in reading about the Everglades. This nonfiction math book combines math and literacy skills, and uses real-life examples of problem solving to teach subject area content. The full-color images, intriguing sidebars, practice problems, and math diagrams make learning math concepts relevant and fun. Text features include a table of...

El 13 de octubre de 1909, hace ahora exactamente cien años, moría fusilado en el castillo de Montjuïc el pedagogo, anarquista y librepensador catalán Francisco Ferrer i Guardia, condenado a la última pena en virtud de una polémica sentencia que lo consideró «autor y máximo responsable» de los sucesos revolucionarios conocidos históricamente como la Semana Trágica. Con la ejecución de Ferrer i Guardia la España dogmática e intransigente, encarnada en el Gobierno de Maura, pretendió saldar, en un controvertido ajuste de cuentas, la deuda que con ella tenía contraída el creador ...