Versos desordenados rigurosamente

Students will learn about the history of hot air balloons and they will also discover the importance of volume when calculating hot air balloon flight. Used in the classroom or at home, this nonfiction Spanish text includes mathematical charts to help students practice calculations. With a glossary, an index, dynamic images, and easy-to-read text, students will build their math and reading skills while they are engaged in reading high-interest content.

Describes the importance of farms and the changes that have taken place on farms in the United States from the eighteenth century to the twentieth century.

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.

Descubre a 25 supercient�ficas que cambiaron el mundo y demostraron que �las chicas son de ciencias! #ChicasDeCiencias �Sabes cu�ntos descubrimientos cient�ficos debemos a las mujeres? Aunque en los libros de historia parezca que las ciencias son cosa de hombres, de eso nada: desde Agnodice, la primera m�dica conocida de la historia, hasta Rosalind Franklin, la qu�mica que descubri� la estructura del ADN, pasando por Vera Rubin, la astr�noma que vio lo que nadie ve�a, las mujeres han sido pioneras en ciencias desde el inicio de los tiempos. Y aun as�, �podr�as...