TED Talks
Ted: Ted Ed: Should You Trust Unanimous Decisions?
Imagine a police lineup where ten witnesses are asked to identify a bank robber they glimpsed fleeing the scene. If six of them pick the same person, there's a good chance that's the culprit. And if all ten do, you might think the case...
TED Talks
Ted: Ted Ed: Can You Solve the Locker Riddle?
Your rich, eccentric uncle just passed away, and you and your 99 nasty relatives have been invited to the reading of his will. He wanted to leave all of his money to you, but he knew that if he did, your relatives would pester you...
TED Talks
Ted: Ted Ed: Can You Solve the Frog Riddle?
You're stranded in a rainforest, and you've eaten a poisonous mushroom. To save your life, you need an antidote excreted by a certain species of frog. Unfortunately, only the female frog produces the antidote. The male and female look...
TED Talks
Ted: Ted Ed: Can You Solve the Temple Riddle?
Your expedition finally stands at the heart of the ancient temple. But as you study the inscriptions in the darkness, two wisps of green smoke burst forth. The walls begin to shake. The giant sandglass begins flowing with less than an...
TED Talks
Ted: Ted Ed: Can You Solve "Einstein's Riddle"?
Before he turned physics upside down, a young Albert Einstein supposedly showed off his genius by devising a complex riddle involving a stolen exotic fish and a long list of suspects. Can you resist tackling a brain teaser written by one...
Scholastic
Scholastic: I Spy
These interactive matching games for elementary age students combine visuals of familiar objects and rhyming riddles to create brain-teasing puzzles.
University of Michigan
Personal Site: Antagonyms
This personal site is a good resource page for teachers who are teaching about word meanings, slang, synonyms, antonyms and word contradictions.
Curated OER
Brain Teasers Banner
Use these twelve printable brain teasers with your math lessons. Each one is illustrated and provides directions to assist you in finding the answer.