Las Mujeres en la Química

El tercer libro de ciencia para niños del científico Gabriel León. En esta nueva entrega de la serie de ciencia para niños de Gabriel León, Pachi, su papá y el perro Lukás se sumergirán en el mundo de las preguntas raras sobre el Universo. ¿Por qué los planetas son redondos? ¿Por qué titilan las estrellas? ¿Por qué me sigue la Luna cuando camino? ¿Por qué Marte se ve rojo? ¿Por qué la Vía Láctea se llama así? Son algunas de las interrogantes sobre el espacio que serán abordadas con un toque de humor y cotidianeidad.

A biography of the Sioux chief who worked to maintain the rights of Native American people and who led the defeat of General Custer at the Little Big Horn in 1876.

This Spanish-language series presents the complete range of math concepts and skills students are expected to master during the first grade. The series moves sequentially, from easiest to hardest concepts, with each book covering a different math topic. The first volume reviews the math concepts students learned in kindergarten. The next six books cover counting, adding and subtracting, tables and graphs, money, patterns, and measuring. The eighth volume is a summary of the math concepts students have studied throughout the year. Each book presents situations that show the relevance of math...

Young children are natural problem-solvers and always looking for answers, especially when it involves interesting animals. This Spanish-language edition of Scaly Swimmers provides young curious readers with striking visual clues and simply written hints. Using the photos and text, readers rely on visual literacy skills, reading, and reasoning as they solve the animal mystery. Clearly written facts give readers a deeper understanding of how the animal lives. Additional text features, including a glossary and an index, help students locate information and learn new words.