Lo que los fósiles nos enseñan sobre la Tierra (Investigating Fossils)

Advances in science have changed our world, all thanks to the scientists behind important discoveries. Some of the most important discoveries have come from female scientists, who were as unique for their work as they were for being trailblazers in a male-dominated industry. This text offers a biographical treatment of such important scientists as Marie Curie, Rachel Carson, and Jane Goodall, as well as others who have made it possible for women of the future to have a career in science. Age-appropriate text, fact boxes, historical and modern images, and a comprehensive timeline complete the...

Simple text and photographs introduce the concept of "skip counting," or counting by groups of a certain number, and present items for practice.

An asteroid hitting Earth may sound like science fiction, but it is a real danger. This book explores what the different scenarios might be and how we can prepare ourselves in case such a disaster should occur.

Queridos amigos, Aprendí a leer desde muy niña buenas lecturas, cuando ya leía de “corrido" me nutrí en la biblioteca de mi abuelo, un militar ermitaño ya pensionado; mi imaginación también volaba oyendo los cuentos de las tertulias de antaño, que se daban en expresiones de admiración de temor, y de risas y cololoquios de familias pueblerinas. Hoy a mis años, las mezclas de entre los recuerdos y los sueños y en mi soledad la visita de alguno que otro fantasma que comparte conmigo amablemente lo que fueron sus vidas, me han abismado al mundo de la imaginación y de las letras, no...

Take a trip around the world and learn about the Earth’s different climate zones! Students will learn the difference between climate and weather, and study the characteristics of low-latitude, mid-latitude, and high-latitude climates. This nonfiction Spanish book teaches students important scientific concepts and vocabulary terms as they learn about tropical rainforests, savannas, deserts, grasslands, taiga forests, deciduous forests, and tundra. The colorful images, diagrams, sidebars, and text features will keep students connected to the text. Aligned to state and national standards, the...