View full lesson: http://ed.ted.com/lessons/why-do-your-knuckles-pop-eleanor-nelsen
Some people love the feeling of cracking their knuckles, while others cringe at the sound. But what causes that trademark pop? And is it dangerous? Eleanor Nelsen gives the facts behind joint popping.
Lesson by Eleanor Nelsen, animation by Steve Belfer Creative.
Tagged under: Eleanor Nelsen,Steve Belfer,TED,TED-Ed,TEDx,TED Education,Knuckle,Joint,Cracking knuckles,Popping knuckles,Ligaments,Bones,Synovial joints,Synovial fluid
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