Here's a game to play with an adult!
How do you play?
You'll need an adult to play with.
If you've got a set of dominoes, you can use those. If you haven't you could make a set (in colour or black and white).
You'll also need a set of the rule cards and a piece of coloured paper to use as 'the Box'.
Give the rule cards to the adult and keep the dominoes yourself.
The adult looks at the rule cards and secretly chooses one.
Your job is to find out what it says on that rule card.
Choose one domino and give it to the adult.
Ask “Does this domino fit your rule?”
If the answer is 'yes' put the domino into the Box. If the answer is 'no' put it outside the Box.
Keep giving dominoes 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 dominoes you needed to offer?