Florida Center for Instructional Technology
Two for One Box Company
Given a box of certain dimensions, young mathematicians must determine if a box that is twice as big, actually holds twice as much. This is a brain-teaser of a problem. The worksheet provides a handy table that has learners calculate the...
Curated OER
Athletes: Brain Teaser
In this brain teaser worksheet, high schoolers solve 1 short answer word problem. Students determine who out of four people is a golfer given various information about the four people.
Curated OER
The Nine Digits Problem
In this problem solving worksheet, students find the solution to 2 brain teasers. Students have two addition problems that they must replace 9 letters with the correct digits 1-9.
Curated OER
Cryptarithms: Calculus
In this cryptarithm activity, students solve 1 short answer problem. Students determine which integer values represent given letters in cryptarithm. Students are given an addition problem adding words like circle, ellipse, series, euler,...
Curated OER
The Eight Digits Problem
In this word problem worksheet, students solve 1 short answer word problem about digits. Students arrange given numbers into an eight digit number given various restrictions about digit placement.
Curated OER
Rubeus + Sirius = Azkaban: Cryptarithm
In this word puzzle worksheet, students solve 1 brain teaser. Students determine the numbers necessary for the following statement to be true, rubeus + sirius = azkaban.
Curated OER
Leftovers Again? - Number Word Problems
In this word problem learning exercise, students solve 1 word problem about numbers. Students find the smallest number that has the given qualities.
Curated OER
Hidden Summer Vocabulary Builder
In this hidden summer vocabulary builder worksheet, students fill in the missing letters in 70 words using definitions and descriptions, then write 8 short answers about summer.
Curated OER
Brain Teaser Problem
In this brain teaser worksheet, pupils solve 1 problem, then click on a button to check their answer. A website reference is given for additional activities.
Curated OER
Brain Teaser
In this brain teaser worksheet, students solve one brain teaser word problems. A website reference is given for additional activities.
Curated OER
Brain Teaser -"Prizes"
In this brain teaser worksheet, students solve 1 brain teaser word problem. A website reference is given for additional activities.
Curated OER
Word Equations
For this brain teaser worksheet, students read 10 clues to a phrase with a number. Students read each word equation that has the initials of words that will make it complete. Students write out the full phrase. Example: 4 S in the Y=...
Scholastic
Scholastic: Math Maven's Mysteries: The Cuckoo Caper
The famous Clockenheimer Cuckoo is missing from Clockenheimer Clocks on Main Street! Help Math Maven get it back by solving a math riddle.
University of Cambridge
University of Cambridge: Nrich: Got It
Sharpen your logical thinking and see if you can figure out the strategy to get to the target number before the computer.
Discovery Education
Discovery Education: Brain Boosters
Discovery School offers a terrific "categorized archive of challenging Brain Boosters." Choose from hundreds of engaging activities pertaining to Categorization, Lateral Thinking, Reasoning, Logic, Word and Letter Play, Spatial...
Maths Challenge
Maths challenge.net: Problem Solving Database
Need some challenging problem-solving work for your students in the following areas: Discrete, Geometry, Numbers, and Code Breaking? This is the place for an enormous database of problems aimed at high school age students. They are...
TED Talks
Ted: Ted Ed: Can You Solve the Three Gods Riddle?
You and your team have crash-landed on an ancient planet. Can you appease the three alien overlords who rule it and get your team safely home? Created by logician Raymond Smullyan, and popularized by his colleague George Boolos, this...
TED Talks
Ted: Ted Ed: Can You Solve the Counterfeit Coin Riddle?
You're the realm's greatest mathematician, but ever since you criticized the Emperor's tax laws, you've been locked in the dungeon. Luckily for you, one of the Emperor's governors has been convicted of paying his taxes with a counterfeit...
TED Talks
Ted: Ted Ed: How High Can You Count on Your Fingers? Spoiler:much Higher Than 10
How high can you count on your fingers? It seems like a question with an obvious answer. After all, most of us have ten fingers- or to be more precise, eight fingers and two thumbs. This gives us a total of ten digits on our two hands,...
TED Talks
Ted: Ted Ed: Can You Solve the Airplane Riddle?
Professor Fukano, the famous scientist, has embarked on a new challenge - piloting around the world in a plane of his own design. There's just one problem: there's not enough fuel to complete the journey. Luckily, there are two other...
TED Talks
Ted: Ted Ed: Can You Solve the River Crossing Riddle?
As a wildfire rages through the grasslands, three lions and three wildebeest flee for their lives. To escape the inferno, they must cross over to the left bank of a crocodile-infested river. Can you help them figure out how to get across...
TED Talks
Ted: Ted Ed: Can You Solve the Prisoner Boxes Riddle?
Your favorite band is great at playing music but not so great at being organized. They keep misplacing their instrucments on tour.
TED Talks
Ted: Ted Ed: Can You Solve the Passcode Riddle?
In a dystopian world, your resistance group is humanity's last hope. Unfortunately, you've all been captured by the tyrannical rulers and brought to the ancient coliseum for their deadly entertainment. Will you be able to solve the...
TED Talks
Ted: Ted Ed: Can You Solve the Control Room Riddle?
As your country's top spy, you must infiltrate the headquarters of the evil syndicate, find the secret control panel, and deactivate their death ray. But your reconnaissance team is spotty, and you have only limited information about the...