math
Math
What Was the Flaw in the Enigma Machine?
Alan Turing broke the Enigma code. What was broken in the Enigma system itself?... READ ON
Movies
Hidden Figures Is Coming to Classrooms
The real-life story behind the hit movie doesn't end once the credits roll; for educators, there's now a free curriculum to use in the classroom that shines a light on the pioneering African-American women of NASA's space program.... READ ON
Math
Can You Solve the Virus Riddle?
It's just the fate of humanity. No pressure.... READ ON
Science
How the Ancient Greeks Did Math With Letters, Not Numbers
They were incredibly talented mathematicians—but they rarely used numbers in their math.... READ ON
Math
What Is Math Anxiety?
And how do you quell it?... READ ON
Fun
Can You Figure Out This Math Problem Intended for 7-Year-Olds?
Are you smarter than a second-grader?... READ ON
Design
A Clock That Forces You to Do Math to Find Out the Time
The Albert Clock challenges you to keep your multiplication and division skills sharp.... READ ON
Math
Can You Solve the Three Gods Riddle?
It's been called the hardest logic puzzle ever made. We agree.... READ ON
Math
15 Female Mathematicians Whose Accomplishments Add Up
Their world-altering contributions include making hospitals safer, laying the groundwork for the computer, and advancing space flight.... READ ON
Math
Can You Solve the Control Room Riddle?
Get out your scratch paper....... READ ON
Quizzes
Pick the Odd Answers
Fun
Fifth Grader Contacts the Police for Help—With Her Math Homework
While the officers' hearts were in the right place, their numbers weren't.... READ ON
Math
How Many Ways Can You Sort a Deck of Cards?
More ways than there are atoms on Earth. But why?... READ ON
Videos
Can You Solve the Frog Riddle?
You have to lick a frog in order to survive. But WHICH frog?... READ ON
Fun
Everyone on Earth Could Live in a Single Building—In Theory
It would need to be 4400 feet tall, though.... READ ON
Math
How Many Combinations Are Possible Using 6 LEGO Bricks?
Running the computer program to calculate it took a week.... READ ON

The "Black Hills" of South Dakota are really mountains. Harney Peak, for instance, is taller than the tallest mountain in the Appalachians.

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