Math · Stage 4

Classify quadrilaterals by their properties (square, rectangle, rhombus, parallelogram, trapezium)

Name a four-sided shape by its sides, its corners and its parallel lines — and discover how a square is really a special kind of rectangle AND rhombus.

✦ Math📘 Stage 4 · S4⏱ ~10 min🧒 Ages 8–9★ Free to start

I can classify quadrilaterals as a square, rectangle, rhombus, parallelogram or trapezium by their properties.

Start the free lesson →⬇ Printable PDF

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Kavi's Four-Sided Family 🔷

Kavi spreads five four-sided shapes across the branch. "Every one of these has 4 sides and 4 corners — they are all quadrilaterals," hoots Kavi. "But they are a family! I name each one by three clues: its sides (which are equal), its corners (are they square?) and its parallel lines. And here's the secret — a square is really a special kind of rectangle AND a special kind of rhombus! Let's meet the family."

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What your child will learn

1Meet the five quadrilateralsA quadrilateral is any shape with 4 straight sides and 4 corners. We tell them apart using three clues: equal sides, square corners (right angles) and parallel sides (lines that never meet). Tap each name to learn its clue.

2Sort each quadrilateral

3A square is a special kind of other shapesSome quadrilaterals belong to more than one group. Tap each card to see the family secret.

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A peek inside

A shape has 4 equal sides and 4 square corners. What is it?

equal sides + square corners → square

Try this at home: A shape has 4 equal sides and 4 square corners. What is it?

Ready to play and learn?

Start the free interactive lesson, or print the handout for screen-free play.

Start the free lesson →⬇ Download PDF

Part of Math · Stage 4 · S4 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.