La Campana de la Libertad (The Liberty Bell)

The use of calendars dates back thousands of years. Why are we driven to record time, and what would happen if we did not? Who created the concept of calendars? Why do different cultures use different calendar systems? And why are calendars so important to us? It is about "time" we found out! Created in collaboration with the Smithsonian Institution, this Spanish-translated Smithsonian Informational Text builds reading skills while engaging students' curiosity about STEAM topics through real-world examples. Packed with factoids and informative sidebars, it features a hands-on STEAM challenge...

The nineteenth century was a time of huge growth and prosperity for California. Although the Gold Rush lasted only seven years, California provided other opportunities for those who emigrated there in search of a better life. This Interactiv-eBook focuses on the history of San Francisco, Los Angeles, Sacramento, and Fresno, and the people and events that influenced their transformations from small towns to booming cities. This nonfiction text builds literacy and social studies content knowledge through the use of intriguing primary source documents like maps, letters, images, articles, and...

Practice time measurement by timing races! Racing is all about having the fastest time, so accurate time measurement is very important for athletes! Young readers will learn all about how athletes measure racing times and will practice their mathematical and STEM skills. The Spanish-translated text, vibrant images, fun practice problems, and helpful mathematical charts in this title make time measurement seem exciting and simple!

555 chistes tronchantes para toda la familia. Libro perfecto para el verano para niños y niñas. CHISTES CON EFICACIA 100%: ¡No podrás parar de reír! ¿Estás cansado de escuchar una y otra vez las mismas bromas de siempre? ¿Se te han agotado los chistes que tenías en la cabeza y ya no tienes ideas para contar a tus amigos? ¿Te aburren las infiniiiiitas historias que no tienen ninguna gracia? LA SOLUCIÓN A TODOS TUS PROBLEMAS ESTÁ EN TUS MANOS: ¡DI ADIÓS AL ABURRIMIENTO Y DESCUBRE 555 CHISTES GENIALES PARA RISAS TOTALES! ___________ Lo que encontrarás en este libro: - 555 chistes...