Subtitles section Play video Print subtitles Logan Smalley: Right now, somewhere out there, there's an educator delivering a mind-altering lesson to their class. Adam Savage: I want to engage your brains in this. Chris Anderson: Trying to get my head around how vast our Earth is. LS: But that lesson only reaches the students in that room. What would happen if we could capture that lesson? AS: This is a toothed wheel. LS: What if, oh, animators and visualization artists could bring that lesson to life? CA: There's an object we see every day that would literally fit one million Earths. AS: It's got a bunch of notches, and it's got a bunch of teeth. This was Fizeau's solution. LS: When that lesson lands, curiosity is ignited. CA: It seems impossibly big. AS: Something interesting happens. CA: But in the great scheme of things, it's just a pinprick. AS: A door is starting to close on the light beam that's coming back to his eye. LS: Then that group of students is one thought closer to being what every teacher hopes their students will become: a lifelong learner. AS: Based on the difference between the two stations. CA: The quest for knowledge and understanding never gets dull. It doesn't. AS: He calculates the speed of light to within two percent of its actual value. CA: The more you know, the more amazing the world seems. LS: That's the central mission of TED-Ed -- to capture and to amplify the voice of the world's greatest teachers. AS: He does this in 1849. CA: It's the crazy possibilities, the unanswered questions, that pull us forward. So stay curious. (Music) Stephanie Lo: TED-Ed is really an invitation to teachers all around the world to submit their best lessons. Jordan Reeves: We review each submission, and we work with the educators to refine the lesson and make sure that they're less than 10 minutes long. Bedirhan Cinar: From there, we mail out these portable recording booths. A teacher pulls up their final lesson, presses record, and then can instantly share it with our animation team. SL: It's also an invitation to animators. We are looking for talented animators to get involved, submit their reels, and help us animate these incredible lessons. LS: Right now, there's a gifted educator somewhere out there delivering a life-changing lesson. The TED-Ed Team hopes that anyone who's passionate about education will help us find that teacher, capture that moment, and amplify it the way that it deserves to be amplified.