My favorite brain teaser, ever, Elena. Simple to create, difficult to explain, lots of fun for the whole family (as I mistakenly though when trying to put on magic shows for my brothers and sister. “I will know cut this strip of paper in half . . .
I think mathematics is a language that helps us understand the world we live in. Like other means of communication, it can’t explain everything to everyone, but for its intended purposes, it surely works great.