El mundo como un juego matemático

The ancient Polynesians were amazing navigators who traversed the Pacific Ocean and settled in its many islands. How did they travel such extreme distances and know where they were going without the use of modern technology like smartphones, satellites, or even magnetic compasses to guide them? Learn the answer to these questions in this Spanish book that uses real-world examples to illustrate science concepts. Created in collaboration with the Smithsonian Institution, this Informational Text builds reading skills while engaging students' curiosity about STEAM topics. Packed with factoids and ...

California became a territory in the United States when the Treaty of Guadalupe Hidalgo was signed in 1848. That treaty ended the Mexican War. Several days before its signing, gold was discovered at Sutter’s Mill in what is now Sacramento. The non-Native population of the territory was less than one thousand in 1848, but the gold rush increased that number to one hundred thousand by the end of 1849. The gold rush not only made many people wealthy, it brought ecologic devastation while speeding up California’s statehood. This book richly explores this interesting history.

Teach students about the years of change and reform between World War I and World War II. With this Spanish-translated book, readers will learn about events such as the Harlem Renaissance, suffrage, the stock market crash on "Black Tuesday," and the Great Depression. Primary source documents and images, and other engaging features, aid students in understanding the social studies content.

“Era una noche lluviosa, de insomnio, cuando la poesía llamó a las puertas de mi casa; me sentía solo, débil y un poco ciego. Escribí mis primeras líneas en una hoja de cuaderno escolar y a partir de ese día, mi vida tuvo sentido…” Llorar letras, sangrar versos de Gustavo Vázquez Gustavo Vázquez, digno hijo de la patria de Amado Nervo, Frida Kahlo, Rosario Castellanos, Octavio Paz, Sor Juana Inés de la Cruz, Concha Urquiza, entre otros y otras valiosas exponentes de la literatura mexicana para el mundo, surge en la plataforma de la poesía americana con una conmovedora como...