Check out our Patreon page: https://www.patreon.com/teded
View full lesson: https://ed.ted.com/lessons/why-do-we-harvest-horseshoe-crab-blood-elizabeth-cox
During the warmer months, especially at night during the full moon, horseshoe crabs emerge from the sea to spawn. Waiting for them are teams of lab workers, who capture the horseshoe crabs by the hundreds of thousands, take them to labs, harvest their cerulean blood, then return them to the sea. Why? Elizabeth Cox illuminates the incredible properties of horseshoe crab blood.
Lesson by Elizabeth Cox, animation by Anton Bogaty.
Thank you so much to our patrons for your support! Without you this video would not be possible.
SookKwan Loong, Daniel Day, Humberto A OjedaGomez, Nick Johnson, Bruno Pinho, Javier Aldavaz, Rodrigo Carballo, Marc Veale, Boytsov Ilya, Bozhidar Karaargirov, Toh Jia Cheng Darren, Ilya Bondarik, Maxi Kobi Einy, Runarm, Misaki Sato, Peter Koebel, Levi Cook, Alex Kongkeo, Craig Sheldon, Andrew Bosco.
Tagged under: TED,TED-Ed,TED Education,TED Ed,Elizabeth Cox,Anton Bogaty,horseshoe crabs,amebocytes,bacteria,LAL,LAL test,spawn,blood,beach,ocean,bacterial endotoxin,open circulatory system,E. Coli,bloodstream,contamination,Gram Stain,injection,dinosaurs
Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.
Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip
Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans
1. Students enter a simple code
2. You play the video
3. The students comment
4. You review and reflect
* Whiteboard required for teacher-paced activities
With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.
Carry out a quickfire formative assessment to see what the whole class is thinking
Create interactive presentations to spark creativity in class
Student teams can create and share collaborative presentations from linked devices
Turn any public video into a live chat with questions and quizzes