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Recently, I gave my STEP students the following discussion question.
Puzzle. A long time ago, before anyone had ever heard of ultrasound, there was a psychic who could predict the gender of a future child. No one ever filed a complaint against her. Why?
I based this puzzle on a story I once read. In the story, the psychic kept a neat lit...
Once I wrote a blog essay titled Seven, Ace, Queen, Two, Eight, Three, Jack, Four, Nine, Five, King, Six, Ten. It was about a “magic” card trick. Magic trick. Take a deck of cards face down. Move t...
Puzzle. How can you make the following equation correct without changing it: 8 + 8 = 91?
The intended answer: turn the paper over! When flipped upside down, the equation becomes 16 = 8 + 8.
As you might expect, my blog post doesn’t stop there. I’d like to share some creative ideas my students came up with when they tackled this puzzle as...
The title sounds like a list of healthy foods. However, this list is from the homework I gave to my students.
Puzzle. Which one doesn’t belong: egg, banana, apple, walnut, tangerine, or avocado?
The book answer was apple as the only one which we can eat without peeling.
Other students suggested a lot of reasons...
I start my homework with warm-up puzzles.
Puzzle. Two friends went for a walk and found $20. How much money would they have found if there were four of them?
The answer, of course, is $20. The number of people doesn’t change the amount of money lying around. Even ChatGPT gave this answer. Duh!
My hope was to catch them not payi...
