Teachers have always had a rough time trying to arouse their students’ interests in certain topics, math especially. To address this educational setback, one math teacher from Taiwan decided to create ...

Lucifer is 2, John is 5, and Henry is 7. Age diff 7 – 2 = 5 is prime; 7 – 5 = 2 is prime; 5 – 2 = 3 is prime. First, he splits them into piles of 3, 3, and 2 bricks. Then he weighs both groups of 3 ...