Shape Sorting

NCERT anchor: NCERT Joyful Mathematics Class 1 — Chapter 2: What is Long? What is Round? (sorting by shape)

• Sort objects into groups: circles, squares, triangles, rectangles.
• Explain why an object belongs in a group (same number of sides/corners, round or not).
• Use sorting trays, rangoli pieces, and classroom buttons.

1. Sort by one property

Level 1 (Verbal): Put all round things in one basket, all 4-corner things in another.

Level 2 (Symbolic): Label groups: Circles | Squares | Triangles | Rectangles.

Visual: Use a chart with shape outlines; match objects to outlines.

2. One object, one best group

Each object goes in the group that best matches its face shape (e.g. coin → circle).

3. Explain your sort

Say: "I put the tile here because it has 4 equal sides — it's a square.

Sorting craft shapes after art class

Step 1 — Collect: coin, square tile, triangular flag, book cover.
Step 2 — Circle group: coin (round, no corners).
Step 3 — Triangle group: flag (3 sides).
Step 4 — Rectangle group: book cover (4 sides, opposite equal).
Step 5 — Square group: tile (4 equal sides).
Answer: four sorted groups with reasons stated.

• Sort these words: round coin, square stamp, triangle cutout.
• Why is a clock face in the circle group?
• Can a shape belong to both circle and square? Why not?
• Stretch: You have 6 shapes: 2 circles, 2 squares, 2 triangles. How many groups? How many in each?

Revision tip: Use a 'shape tray' at home — sort buttons and lids by shape once a week.

Open the Practice tab for graded questions on Shape Sorting.