TED Talks
Ted: Ted Ed: The Chemistry of Cold Packs
If you stick water in the freezer, it will take a few hours to freeze into ice. How is it, then, that cold packs go from room temperature to near freezing in mere seconds? John Pollard details the chemistry of the cold pack, shedding...
TED Talks
Ted: Ted Ed: Insults by Shakespeare
In this TED lesson students can watch a video [6:24] about Shakespearian insults, answer multiple choice and open response questions about the video, and follow links to dig deeper into the topic.
TED Talks
Ted: Ted Ed: Why Is Biodiversity So Important?
Our planet's diverse, thriving ecosystems may seem like permanent fixtures, but they're actually vulnerable to collapse. Jungles can become deserts, and reefs can become lifeless rocks. What makes one ecosystem strong and another weak in...