Matemáticas en el cinturón de asteroides (Math in the Asteroid Belt)

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.

Discover how the heart and lungs work together to keep the blood flowing and the body breathing in this book that provides pictures of real hearts and lungs and accompanying diagrams. Readers will learn about circulation and breathing as well as related vocabulary.

Evangeline era una niña cuando su padre la dejó a cargo de las Hermanas Franciscanas de la Perpetua Adoración, en el Convento de St. Rose, cerca de Nueva York. Ahora, con veintitrés años, el descubrimiento de una carta de 1943 la sumerge en una historia secreta que se remonta a miles de años: el antiguo conflicto entre la Sociedad de los Angelólogos y los Nefilim, descendientes de la unión de los ángeles y los hombres, unas criaturas de monstruosa belleza. Los Nefilim, que han ido perdiendo lentamente su poder y grandeza de antaño, ansían descubrir los secretos que esconde esta...

How many hockey sticks are there? How many hockey players? Early readers will learn to count cardinal numbers with this Spanish book for kids. With bright images and simple text, this full-color book develops students' math and reading skills. The Math Talk questions build fluency and comprehension of basic math concepts. Perfect for shared or guided reading, this nonfiction kids book is ideal for kindergarten and ages 4-6.