Los ciclos de vida de los peces (Fish Life Cycles)

Many insects hatch from eggs and molt several times as they grow bigger. Others, such as butterflies, undergo a complete metamorphosis. A common science curriculum topic, insect life cycles may be confusing because of these differences. However, this book breaks down these cycles into easy-to-understand steps in both accessible language and colorful diagrams readers can turn to for review again and again. The most important vocabulary needed to talk about insect life cycles is further explained in fact boxes and an extended glossary.

Más de 15.000 especies de plantas y animales están en peligro de extinción. Este atlas enciclopédico muestra las razones de esta desaparición y presenta algunas de las medidas que están tomando diversas organizaciones para evitarlo.

Love story set in Madrid during the last days of the reign of Alfonso XIII. Isabel, an educated young woman from a pro-monarchy family meets Joaquín, whose background is very different. The author means to offer a complete and accurate picture of the ten turbulent years that determined the history of Spain in the twentieth century.

Look up at the night sky. What do you see? This Spanish nonfiction reader introduces students to the subject of scientific observation, and teaches students about the things we use to observe and learn about the world around us. Aligned to state and national standards, the book contains easy-to-read text and nonfiction text features like an index, a glossary, captions, bold font, and detailed images to keep students connected to the text. A hands-on science experiment helps students apply what they have learned and develops critical thinking skills.

Guía completa para aprender a tocar el bajo sin necesidad de saber música al comenzar. Estructurada en cinco capítulos, y gracias al número de sencillas ilustraciones y los múltiples ejemplos musicales, el estudiante puede aprender, paso a paso, con explicaciones claras y eficaces, todo lo necesario para llegar a tocar con destreza este instrumento. En el capítulo primero se exponen los elementos básicos para tocar y se prepara al lector para adquirir una técnica sólida. En el segundo se estimula al estudiante a aprender la notación musical de forma simple para que toque con otros...