Tutorpip← About this lessonOpen the sheet →Download PDF
Grade 1 · Maths · Lessons
Join them up
🟦square🔺triangle⬛rectangle🌓half circle
Join shapes.
The big ideaJoin shapes to make a new one. Then join that one too.

How it works

You can join shapes to make a new shape.

Then you can join that new shape to others.

Two triangles can make a square.

Put together• 2 triangles• 1 squarePut together• 2 half circles• 1 circle
Joining shapes.

Example 1: Two triangles

  1. Put two triangles side by side along their long edge.
  2. They can make a square.
  3. A square is made of two triangles.

Example 2: Two half circles

  1. Put two half circles together along the flat sides.
  2. They make a whole circle.
  3. Two halves make a whole.

Example 3: A bigger square

  1. Four small squares fit in a 2 by 2 block.
  2. They make one big square.
  3. Join small shapes to make a big one.

Words to know

join
To put together.
shape
The look of an outline, like a square.

Watch out

Try it

  1. How many triangles make a square?
  2. What do two half circles make?
  3. What do two squares side by side make?
  4. Can you turn a shape to make it fit?
Answers: 1. 2 · 2. a circle · 3. a rectangle · 4. yes
For grown-upsCut a paper square in half corner to corner and ask your child to put the two triangles back together.
Open these notes on screenScan the code, or go to tutorpip.com.