El Movimiento por el sufragio femenino (Women's Suffrage Movement)

Sesenta autores, desde catedráticos de universidad hasta estudiantes de Secundaria y Bachillerato, nos presentan los cuarenta desafíos que la Real Sociedad Matemática Española propuso con motivo de su centenario.Son cuarenta estimulantes retos que avivan el ingenio. Enfrentándose a ellos, el lector se sentirá un auténtico investigador matemático.Pero no hay que asustarse. No es necesario saber muchas matemáticas. La herramienta esencial para resolver los desafíos es pensar ordenadamente.

Las Sociedades Economicas de Amigos del Pais nacen a finales del siglo XVIII como instituciones ilustradas y reformistas para el fomento de la instruccion y la economia - la agricultura y otros "oficios utiles" - y sentar y extender las bases en la necesaria construccion de una Espana moderna y desarrollada.Entre el centenar de Sociedades Economicas, a partir del siglo XIX, se encuentra la Sociedad Economica de Amigos del Pais de Liebana - en Cantabria - y sobre su fundacion, proyectos y realizaciones se ocupa este trabajo. En este periodo intenso y controvertido, entre la accion y la...

The use of calendars dates back thousands of years. Why are we driven to record time, and what would happen if we did not? Who created the concept of calendars? Why do different cultures use different calendar systems? And why are calendars so important to us? It is about "time" we found out! Created in collaboration with the Smithsonian Institution, this Spanish-translated Smithsonian Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge...

Amphibians can be found all over the world. There are more than 7,500 kinds of amphibians living in streams, rainforests, deserts, and everywhere in between. Many of them are in danger due to a deadly fungus, but help is on the way! Created in collaboration with the Smithsonian Institution, this Spanish book ignites a curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides English language learners through every step of the engineering design process. Inspire students to pursue a STEAM career with career advice from a real person working in ...