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Mathematics · Pre-K

Compose and Compare Shapes

Olly builds with shape tiles. Children describe triangles, squares, rectangles, circles and hexagons by their sides and corners, put shapes together to make new shapes (two triangles make a square), and compare shapes by size, sides and corners. A first look at solid shapes sorts the ones that roll from the ones that stack.

  • 3 lessons
  • About 30 minutes
  • Shape builders check: 5 questions
  • Ways to answer: choose an answer, count, match pairs and sort into groups
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What learners will discover

  • Describe triangles, squares, rectangles, circles and hexagons by counting their sides and corners.
  • Put shapes together to make new shapes, such as two triangles making a square or two squares making a rectangle.
  • Compare shapes by size, sides and corners, and sort solid shapes into ones that roll and ones that stack.

Lessons

  1. Sides and corners 5 steps3 practiceabout 10 min
  2. Put shapes together 5 steps3 practiceabout 10 min
  3. Same and different 5 steps2 practiceabout 10 min
  4. Shape builders check 5 questions at the end

Keep exploring

Games to practice with

  • Number-Line HopHelp the frog hop to the right number — from counting to negative fractions.
  • Paint by AnswersSolve each space, dip your brush and watch a picture come to life.
  • Shape PicnicSet up Olly's picnic by putting every shape on its matching outline.

More pre-K math

Guide for grown-ups