How it works
A rule tells us which group each thing goes in.
Same rule, same group, every time.
A new rule makes new groups.
Worked examples
Round things
- The rule is: round things go in the blue box.
- A ball is round, so it goes in blue.
- A coin is round too, so it goes in blue.
Things with corners
- The rule is: things with corners go in the yellow box.
- A block has corners, and so does a book.
- Both go in the yellow box.
A new rule
- Mia tries a new rule: color.
- Blue things go in one box and yellow things in the other.
- The same toys make new groups, because the rule decides.