You have JavaScript disabled
For the best experience, please turn JavaScript on.
Here's how
Toggle Navigation
TED Ed
sign in
Discover
Lessons
Discover video-based lessons organized by subject
Series
Discover videos organized by themes
Create
A Lesson
Create your own video-based lesson
Student Talks
Students can create talks on their own, in class or in Clubs
Support
Nominate
Nominate educators or animators to work with TED-Ed
Donate
Donate to support TED-Ed’s non-profit mission
Shop
Buy custom prints inspired by
TED-Ed animations
Search
Close Search
Search
Discover
Lessons
Series
Create
A Lesson
A Talk
Support
Nominate
Donate
Shop
Help
Contact
Blog
About
Build a lesson around any TED-Ed Animation, TED Talk or YouTube video
Create a Lesson
Actions and Reactions
Animation Basics
Awesome Nature
Before and After Einstein
Behind the Curtain
Click Your Fortune
Cyber-Influence & Power
Discovering the Deep
Ecofying Cities
Everyone Has a Story
Exploring the Geometry of Form
Exploring Theories
Getting Under Our Skin
Government: Declassified
How Things Work
Ingenuity in the Developing World
Inventions that Shape History
Making the Invisible Visible
Mastering Tech Artistry
Math in Real Life
Mind Matters
Mysteries of Vernacular
Our Changing Climate
Out of This World
Periodic Videos
Playing with Language
Questions No One (Yet) Knows the Answers To
Reading Between the Lines
Superhero Science
The Artist's Palette
The Big Questions
The Way We Think
The World's People and Places
The Writer's Workshop
Things They Don't Teach in School (But Should)
Troubleshooting the World
Visualizing Data
What Will You Do with Your Life?
You Are What You Eat
You Graduated ... Now What?
330,738
Views
Mathematics
Can you solve the multiplying rabbits riddle? - Alex Gendler
- 04:39
Lesson by
TED Ed
Video by
TED-Ed
542,464
Views
Mathematics
Can you solve the troll’s paradox riddle? - Dan Finkel
- 03:45
Lesson by
TED Ed
Video by
TED-Ed
576,160
Views
Mathematics
Can you solve the time travel riddle? - Dan Finkel
- 04:32
Lesson by
TED Ed
Video by
TED-Ed
492,490
Views
Mathematics
Can you solve the giant iron riddle? - Alex Gendler
- 03:38
Lesson by
TED Ed
Video by
TED-Ed
594,413
Views
Mathematics
Can you solve the secret werewolf riddle? - Daniel Finkel
- 04:29
Lesson by
TED Ed
Video by
TED-Ed
698,600
Views
Mathematics
Can you solve the stolen rubies riddle? - Dennis Shasha
- 04:51
Lesson by
TED Ed
Video by
TED-Ed
618,665
Views
Mathematics
Can you solve the killer robo-ants riddle? - Dan Finkel
- 04:52
Lesson by
TED Ed
Video by
TED-Ed
556,636
Views
Mathematics
Can you solve the alien probe riddle? - Dan Finkel
- 05:09
Lesson by
TED Ed
Video by
TED-Ed
373,691
Views
Mathematics
Math is the hidden secret to understanding the world - Roger Antonsen
- 17:05
Lesson by
lauren mcalpine
Video by
TED
630,017
Views
Mathematics
Can you solve the rebel supplies riddle? - Alex Gendler
- 05:18
Lesson by
TED Ed
Video by
TED-Ed
1,271,464
Views
Mathematics
Can you solve the Leonardo da Vinci riddle? - Tanya Khovanova
- 05:08
Lesson by
TED Ed
Video by
TED-Ed
1,055,536
Views
Mathematics
Can you solve the rogue AI riddle? - Dan Finkel
- 05:13
Lesson by
TED Ed
Video by
TED-Ed
406,157
Views
Mathematics
How exactly does binary code work? - José Américo N L F Freitas
- 04:40
Lesson by
TED Ed
Video by
TED-Ed
9,263,992
Views
Mathematics
The archer's paradox in slow motion
- 08:51
Lesson by
Cynthia Silva
Video by
SmarterEveryDay
385,726
Views
Design, Engineering & Technology
The physics of roller coasters
- 03:39
Lesson by
Cynthia Silva
Video by
SciShow
573,076
Views
Mathematics
Can you solve the Mondrian squares riddle? - Gord Hamilton
- 04:46
Lesson by
TED Ed
Video by
TED-Ed
1,118,895
Views
Mathematics
Can you solve the giant cat army riddle? - Dan Finkel
- 05:20
Lesson by
TED Ed
Video by
TED-Ed
1,766,797
Views
Mathematics
Can you solve the penniless pilgrim riddle? - Dan Finkel
- 04:45
Lesson by
TED Ed
Video by
TED-Ed
5,037,744
Views
Mathematics
Can you solve the wizard standoff riddle? - Daniel Finkel
- 05:26
Lesson by
TED Ed
Video by
TED-Ed
1,457,056
Views
Mathematics
Can you solve the false positive riddle? - Alex Gendler
- 05:20
Lesson by
TED Ed
Video by
TED-Ed
2,717,397
Views
Mathematics
Why can't you divide by zero?
- 04:51
Lesson by
TED Ed
Video by
TED-Ed
2,602,530
Views
Mathematics
Riemann's paradox: pi = infinity minus infinity
- 11:58
Lesson by
Cynthia Silva
Video by
Mathologer
1,049,228
Views
Mathematics
Can you solve the buried treasure riddle? - Daniel Griller
- 05:03
Lesson by
TED Ed
Video by
TED-Ed
1,732,678
Views
Mathematics
Can you solve the seven planets riddle? - Edwin F. Meyer
- 06:01
Lesson by
TED Ed
Video by
TED-Ed
1
2
3
4
5
Next ›
Last »
Log In to Take or Create a Lesson
Log In to participate
Please Log In or Register to Apply
Please Log in to Access Leader Resources
If you have already logged into ted.com click Log In to verify your authentication. Click Register if you need to create a free TED-Ed account.
Log In
Register
Only students who are 13 years of age or older can create a TED-Ed account.