TED Talks
Ted: Ted Ed: Can You Solve the Rebel Supplies Riddle?
You're overseeing the delivery of supplies to a rebel base in the heart of enemy territory. To get past customs, all packages must follow this rule: if a box is marked with an even number on the bottom, it must be sealed with a red top....
TED Talks
Ted: Ted Ed: Can You Solve the Alien Probe Riddle?
Your team has developed a probe to study an alien monolith. It needs protective coatings in red, purple and green to cope with the environments it passes through. Can you figure out how to apply the colors so the probe survives the trip?
TED Talks
Ted: Ted Ed: Can You Solve the Killer Robo Ants Riddle?
The good news is that your experimental robo-ants are a success. The bad news is that you accidentally gave them the ability to shoot deadly lasers and you can't turn it off. Can you stop them from escaping their habitat before the...
TED Talks
Ted: Ted Ed: Can You Solve the Stolen Rubies Riddle?
Townspeople are demanding that a corrupt merchant's collection of 30 rubies be confiscated to reimburse the victims of his schemes. The king announces that the fine will be determined through a game of wits between the merchant and the...
TED Talks
Ted: Ted Ed: Can You Solve the Time Travel Riddle?
Your professor has accidentally stepped through a time portal in his physics lab. You've got just a minute to jump through before it closes and leaves him stranded in history. Your only way back is to grab enough colored nodules to...
TED Talks
Ted: Ted Ed: Can You Solve the Multiplying Rabbits Riddle?
After years of experiments, you've finally created the pets of the future- nano-rabbits! They're tiny, they're fuzzy and they multiply faster than the eye can see. But a rival lab has sabotaged you, threatening the survival of your new...
TED Talks
Ted: Ted Ed: Can You Solve the Secret Werewolf Riddle?
You're on the trail of a werewolf that's been terrorizing your town. After months of detective work, you've narrowed your suspects to one of five people. You've invited them to dinner with a simple plan: to slip a square of a rare...
TED Talks
Ted: Ted Ed: Can You Solve the Giant Iron Riddle?
Can you test the batteries so that you get a working pair in seven tries or less?
TED Talks
Ted: Ted Ed: Can You Solve the Vampire Hunter Riddle?
You've stealthily descended into the darkness of a vampire cave, setting a sequence of mirrors as you go. When the sun reaches the right angle in the sky, a beam of light will ricochet along the mirrors, strike a diffuser, and illuminate...
TED Talks
Ted: Ted Ed: Can You Solve the Jail Break Riddle?
Your timing made you and your partner infamous bank robbers. Now, you need to use that timing to break out of jail. Your partner is about to flash you a signal, and exactly 45 seconds later the electric fence circuit will short out. Then...
TED Talks
Ted: Ted Ed: Can You Solve the Unstoppable Blob Riddle?
A shooting star crashes onto Earth. It's unstoppable: no matter what you throw at it, it just re-grows and continues its rampage. The only way to save the planet is to cut the entire blob into precise acute triangles, rendering it inert....
TED Talks
Ted: Ted Ed: Can You Solve the Cuddly Duddly Fuddly Wuddly Riddle?
You've promised to get your son the cutest creature in creation: the cuddly. It's part of the Wuddly species, cousin to the terrifying duddly and the hideous fuddly. To make one, 100 eggs are placed in an incubator to undergo egg fusion,...
TED Talks
Ted: Ted Ed: Can You Solve the Mondrian Squares Riddle?
Dutch artist Piet Mondrian's abstract, rectangular paintings inspired mathematicians to create a two-fold challenge. Can you solve the puzzle and get to the lowest score possible?
TED Talks
Ted: Ted Ed: Can You Solve the Giant Cat Army Riddle?
The villainous Dr. Schrodinger has developed a growth ray and intends to create an army of giant cats to terrorize the city. Your team of secret agents has tracked him to his underground lab. You burst in to find that it's a trap! Can...
TED Talks
Ted: Ted Ed: Can You Solve the Penniless Pilgrim Riddle?
After months of travel, you've arrived at Duonia, home to the famous temple that's the destination of your pilgrimage. The walk from the welcome center to the temple isn't a long one but there's a problem. Can you outsmart the city's...
TED Talks
Ted: Ted Ed: Can You Solve the Wizard Standoff Riddle?
You've been chosen as a champion to represent your wizarding house in a deadly duel against two rival magic schools. Your opponents are a powerful sorcerer who wields a wand that can turn people into fish, and a powerful enchantress who...
TED Talks
Ted: Ted Ed: Can You Solve the False Positive Riddle?
Mining unobtainium is hard work- the rare mineral appears in only 1% of rocks in the mine. But your friend Tricky Joe has something up his sleeve. The unobtainium detector he's been perfecting for months is finally ready, and it returns...
Unite for Literacy
Unite for Literacy: Animals: Who Is in the Ocean?
A riddle book about ocean animals. Includes audio narration in 17 additional languages with text in English.
Scholastic
Scholastic: I Spy: The Library
I SPY activities consist of software, jigsaw puzzles, and games for children. Students use problem-solving skills when playing the visual brain-teasing puzzle. The resource combines photographs of familiar object collections with rich...
Scholastic
Scholastic: I Spy: City
I SPY activities consists of software, jigsaw puzzles, and games for children. Students use problem-solving skills when playing the visual brain-teasing puzzle. The resource combines photographs of familiar-object collections with rich...
Scholastic
Scholastic: I Spy: The View From Duck Pond Inn
I SPY activities consist of software, jigsaw puzzles, and games for children. Students use problem solving skills when playing the visual brain-teasing puzzle. The resource combines photographs of familiar-object collections with rich...
Other
English for Kids (For Native Speakers of Russian)
Offers the latest news on learning English in Russia. Contains useful links to English language learning resources: tales, songs, games, riddles, lesson plans, proverbs, and a pen pal club.
University of Cambridge
University of Cambridge: Nrich: Romantic Riddle
See if you can figure out the solution to this romantic riddle. You can find the solution right at this one page website once you have formulated your own.
Greek Gods
Greek Gods: Monsters: Sphinx
Learn about the frightful Sphinx, his riddle, and who solved it.
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