Play it · Ages 6–7
The Handshake Problem
Everyone shakes hands with everyone. How many? One hundred challenges — a school year of them. Three are the year’s Hard Thing, at 33, 66 and 100. The rest are reps: same kind of question, new content every time. Nothing is timed and nothing is scored.
0/100
Finish the patternTwo in a row
What comes next?
Say it out loud as you point: this one, that one, this one…
Two in a row
🔵🟠🔵🟠🔵?
Which one fills the gap?
Ten minutes of stuck counts as the work.
Now do it away from the screen
The board is the warm-up. The year page has the same problem on paper, the hint ladder, the answer, the five-day week and three questions nobody can mark — which is where the twenty-five minutes actually go.