The rule is given first. Your child checks each candidate against it. Knowing how to spot straight sides and corners helps; the question also gives each shape’s side count.
How to play
- Read the rule and the three candidates aloud. Ask your child to check the number of straight sides for each one.
- Let your child choose a shape, then ask why the other two do not fit the rule.
You will need
- No materials needed.
Rule: choose the shape with exactly three straight sides. Candidate A is a triangle. Candidate B is a square. Candidate C is a circle. Which candidate fits the rule?
Well done! That is right. The rule asks for exactly three straight sides. Only the triangle has three.
Not quite yet. Trace each shape’s straight sides with your finger and count them. Which one has exactly three?
Answer and explanation
The rule asks for exactly three straight sides. Only the triangle has three.
Make it easier
Read one candidate at a time and count its stated sides together before looking at the next.
Make it more challenging
Cover the options and ask your child to name a shape with exactly three straight sides, then check the candidates.
If you continue with physical shapes, use pieces too large to swallow and supervise the activity.