CD9. Nuestra historia

Los jovenes lectores se transportan dentro de un laberinto de un castillo antiguo directamente al corazon de una batalla con un malvado senor feudal y para cumplir la mision hay que encontrar la salida y descifrar el mensaje oculto. Estas aventuras sirven tambien como lecciones acerca de culturas y actividades del pasado, el presente, y el futuro.

Over the years, people have looked for ways to improve our imperfect sight. This has led us to the world of optics, which is the study of light and how it travels. What are some of these innovations that have changed how we see the world, and how do they work? Find the answers to these questions with this Smithsonian Informational Text! Created in collaboration with the Smithsonian Institution, this text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step...

This book is a comprehensive, practical presentation of the principles of behavior modification and guidelines for their application. It teaches forms of behavior modification ranging from helping children learn necessary life skills to training pets, to solving personal behavior problems.