Logic & puzzles • Classes 1–3
One collection, two rules
Sort your imaginary shop first by shape, then by size.
Take your time. Speak, draw or write your answers.
Here is what is happening.
Sorting means putting items together using a rule. The same item can belong to different groups when the rule changes. A big circle is both big and round.
Your little investigation
What you need
Paper and a pencil. Draw objects rather than using tiny loose pieces.
Draw a large circle, a small circle, a large square and a small square.
Group them by shape. Say the rule aloud.
Now group by size. Explain why the groups changed.
Under the rule “circles together”, where does the small circle go?
KEEP ASKING
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