Here's a game to play with an adult!
How do you play?
You'll need an adult to play with.
You'll also need a set of the rule cards
and a set of the house cards
, and a piece of coloured paper to use as 'the Box'.
Give the rule cards to the adult and keep the house cards yourself.
The adult looks at the rule cards and secretly chooses one.
Your job is to find out what it says on it.
Choose one house card and give it to the adult.
Ask “Does this card fit your rule?”
If the answer is 'yes' put the house card into the Box, if the answer is 'no' put it outside the Box.
Keep giving cards to the adult until you think you have worked out what it says on the rule card.
Say “Is your rule ...?”
If you're right, you could swap roles.
If you're wrong keep going!
What's the least number of house cards you needed to offer?
Notes for adults
This game is all about making sensible guesses, or conjectures, and explaining your thinking.
use only the rule cards with the black border and have them all on view.
use all the cards and keep them hidden from view.
When you've completed a game, talk together about how the rule was found.
Repeat the game, aiming to reduce the number of house cards offered.
There's a group version of this game here