TED-Ed
The Colossal Consequences of Supervolcanoes
The threat posed by super volcanoes is explored in a short video that reviews the destruction caused by Mount Tambora in 1815 and by Peru's Huaynaputina in 1600. Think it can't happen again? The narrator contends that the explosive...
Curated OER
Life's Big Questions: Where Did Life Come From?
Young scholars explore the life forms that live in the hot springs of Yellowstone. They examine how microscopic creatures can survive in these extreme conditions. Students perform experiments to observe growth samples and demonstrate...
Curated OER
Mixed Prepositions 6
In this online interactive grammar skills worksheet, students answer 10 multiple choice questions regarding the use of prepositions. Students may submit their answers to be scored.