Princesas y lobas

These biographies introduce young readers to important figures in American history. Ideal for reports and correlated to the social studies curriculum, the series presents a straightforward account of each individual's life and times and describes how each person contributed to the shaping of our nation.

What causes sound? How does sound travel? Sound begins when matter vibrates. Without this vibration sound could not move and nothing would make any noise. Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments that will appeal to readers of all ages.

Introducción a Cessna 152 y 172 fue creada para pilotos que aman los aviones Cessna, para estudiantes pilotos que vuelan Cessna y para cualquiera que ame a la aviación y este tipo de aviones. En este libro aprenderás todo sobre la historia de Cessna y sobre dos de los aviones más volados del mundo, el Cessna 152 y el maravilloso Cessna 172. Operaciones normales, operaciones anormales, performance, limitaciones y todos los detalles que necesitas para aprender todo sobre estos increíbles aviones. La mejor manera de estudiar los manuales de un avión. Recuerda, el conocimiento es...

Land has many different characteristics. It can be hilly, rocky, grassy, narrow, and dry. Or, it can be flat, smooth, sandy, wide, and wet! This Spanish book introduces students to the concept of landforms. With images that are easy to identify and clear, simple sentence structures, this science reader simplifies scientific concepts for young students as they improve their reading skills. A fun and easy science experiment and Your Turn! activity provide more in-depth opportunities for additional learning. Nonfiction text features include a glossary and an index. Engage students in learning...