Como Hacer Un Cohete Efervescente/How To Build A Fizzy Rocket

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...

Los acontecimientos que cambiaron el rumbo de la historia de Japón. El emperador de Japón está decidido a recuperar a cualquier precio el poder que los samuráis le arrebataron a sus antepasados. Sin embargo, el clan Hōjō ataca la capital imperial antes del levantamiento. Extramuros, un terrateniente provincial continúa fiel al emperador, que se ha visto obligado a refugiarse en la fortaleza de los monjes guerreros de Kyoto, y su juramento de lealtad es la última esperanza de los sitiados. La guerra Genkō ha comenzado. Y mientras todos estos eventos sacuden Las Islas Sagradas, un...

Consolidates the Student's Book lessons with targeted practice, unit by unit Additional practice of reading, writing, speaking, listening and use of English skills Extensive grammar and vocabulary practice Complete practice exam in Unit 10 Designed for independent study at home and practice in class Audio for listening lessons available on the Student's App

Do you know why there are thirteen stripes and fifty stars on the American flag? Or how the American flag inspired Francis Scott Key to write "The Star Spangled Banner?" Find out the answers to these questions and more in The American Flag.