Nos Divertimos/On All Kinds of Days

Presents the things that everyone needs, as well as things some people want, and invites the reader to consider his or her own wants and needs.

Introduces different kinds of light, the properties of light, and how light can create shadows of different shapes and sizes.

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.

Clues about the lion's physical characteristics, behavior, and habitat lead the reader to guess what animal is being described. Presented in English and Spanish. Presented in English and Spanish.

Cynthia Ann Parkers family moved to Central Texas when she was about nine years old. A year later, a large force of Comanche warriors attacked Fort Parker and seized Cynthia Ann and four other captives. The other four were eventually released, but she lived among the Indians for 25 years, immersed in the Comanche way of life. Though given a number of opportunities to go back to her white family, she always chose her life with the Comanche, choosing instead to stay with her husband and children. She eventually returned to white society as an adult.

A soldier, a farmer, a governor, and an explorer, Juan Ponce de León made his very first voyage with the famed Christopher Columbus. As an explorer, Ponce de León may be better known for what he didn't discover the fabled fountain of youth than for what he did discover Florida!