Luke: What's a 1-by-1 square, what's a step squad up to 2, what's a 3-by-3 square, what's a step squad up to 4, what's a 5x5 square, and what's a step squad up to 6?
Me: 🤔 🧠🤨 1, 3, 9, 10, 25, 21
Luke: 21? The step squad up to 6 is not bigger than the 5x5 square?
Me: Nope.
He wanted to see it for himself so I got out the graph paper.
Luke: This one's 21. And this one's 25. But this seems bigger.
It took some re-counting before he become convinced!
