Year 1: Shapes that are big, small or turned round
Part of the Year 1 2-d and 3-d shapes chapter. Chapter overview · whole chapter on one page · Download worksheet (PDF) · Answers (PDF)
Shapes that are big, small or turned round
A shape is still the same shape when it is big or small. It is still the same shape when it is turned round, too. A triangle that points down is still a triangle.
Look at these four shapes. Each one is turned or a different size. Can you name each one?
Key ideas
- Size does not change the name of a shape.
- Turning a shape does not change its name.
- Count the sides and corners to check.
- A square turned onto a point is still a square.
Method. Turning a shape does not change its sides or corners.
- Count the sides of the triangle. Turning the shape does not change its sides.3 sides
- Count the corners of the triangle. Turning the shape does not change its corners.3 corners
- Decide if the name still fits. A shape with these sides and corners keeps its name.Yes. It is still a triangle.
Check. Turn a paper shape round and count again. ✓
Watch out. Do not judge a shape by the way it points. Count its sides.
Method. Turning a shape does not change its sides or corners.
- Count the sides of the square. Turning the shape does not change its sides.4 sides
- Count the corners of the square. Turning the shape does not change its corners.4 corners
- Decide if the name still fits. A shape with these sides and corners keeps its name.Yes. It is still a square.
Check. Turn a paper shape round and count again. ✓
Watch out. Do not judge a shape by the way it points. Count its sides.
Method. Count the sides and corners of each shape. Size does not change the name.
- Count the sides of the first shape. Touch each straight side.4 straight sides
- Count the sides of the second shape. Check the other shape the same way.4 straight sides
- Write the answer. The same sides and corners mean the same shape.Yes. Both have 4 straight sides and 4 corners.
Check. Both shapes have 4 corners. ✓
Watch out. Size does not change the name of a shape.
Watch out
Watch out: a shape can look different when it is turned. Do not say it is a new shape. Count its sides and corners instead.
Exam tip
Grown-up tip. Cut a triangle from card. Turn it round and ask: “Is it still a triangle? How do you know?” Your child can count the sides with a finger each time.
Exercise 3B Shapes that are big, small or turned round
Non-calculatorKey words. A flat shape is 2-D. A solid shape is 3-D, so it has depth.
Method. Look at the shape, then match its facts to a name.
- Look at the shape. Is it flat, or is it solid? Flat shapes are 2-D. Solid shapes are 3-D.It is a flat (2-D) shape.
- Read its facts. Each name has its own facts. Count the sides, corners or faces.It has 3 straight sides and 3 corners.
- Find the name that matches. Only one shape name has these facts.triangle
Check. Say the name out loud. Does it fit the facts? ✓
Watch out. Count the sides or faces before you say the name.
Key words. A flat shape is 2-D. A solid shape is 3-D, so it has depth.
Method. Look at the shape, then match its facts to a name.
- Look at the shape. Is it flat, or is it solid? Flat shapes are 2-D. Solid shapes are 3-D.It is a flat (2-D) shape.
- Read its facts. Each name has its own facts. Count the sides, corners or faces.It has 4 straight sides and 4 corners. The opposite sides are the same length.
- Find the name that matches. Only one shape name has these facts.rectangle
Check. Say the name out loud. Does it fit the facts? ✓
Watch out. Count the sides or faces before you say the name.
Key words. A flat shape is 2-D. A solid shape is 3-D, so it has depth.
Method. Look at the shape, then match its facts to a name.
- Look at the shape. Is it flat, or is it solid? Flat shapes are 2-D. Solid shapes are 3-D.It is a flat (2-D) shape.
- Read its facts. Each name has its own facts. Count the sides, corners or faces.It has 4 straight sides, all the same length, and 4 corners.
- Find the name that matches. Only one shape name has these facts.square
Check. Say the name out loud. Does it fit the facts? ✓
Watch out. Count the sides or faces before you say the name.
Key words. A flat shape is 2-D. A solid shape is 3-D, so it has depth.
Method. Look at the shape, then match its facts to a name.
- Look at the shape. Is it flat, or is it solid? Flat shapes are 2-D. Solid shapes are 3-D.It is a flat (2-D) shape.
- Read its facts. Each name has its own facts. Count the sides, corners or faces.It has 3 straight sides and 3 corners.
- Find the name that matches. Only one shape name has these facts.triangle
Check. Say the name out loud. Does it fit the facts? ✓
Watch out. Count the sides or faces before you say the name.
Method. Count the sides and corners of each shape. Size does not change the name.
- Count the sides of the first shape. Touch each straight side.3 straight sides
- Count the sides of the second shape. Check the other shape the same way.3 straight sides
- Write the answer. The same sides and corners mean the same shape.Yes. Both have 3 straight sides and 3 corners.
Check. Both shapes have 3 corners. ✓
Watch out. Size does not change the name of a shape.
Method. Count the straight sides one at a time.
- Look at the rectangle. Find each one of the straight sides.1, 2, 3, 4
- Count them all. The last number tells you how many there are.4 straight sides
- Write the answer. 4
Check. Count again from the other side. You get 4 again. ✓
Watch out. Touch each one as you count it, so you do not miss one or count one twice.
Method. Check each shape against the rule, then put the shapes into two groups.
- Check each shape. Check each shape: is it a square, even if it is turned?A: no B: yes C: no
- Make the group of shapes that are squares. These fit the rule. The others are not squares.Group: B
- Write the answer. B
Check. Every letter is in one group only. The other group has: A and C. ✓
Watch out. A shape can only go in one group for each rule. Check every letter.
Method. Turning a shape does not change its sides or corners.
- Count the sides of the square. Turning the shape does not change its sides.4 sides
- Count the corners of the square. Turning the shape does not change its corners.4 corners
- Decide if the name still fits. A shape with these sides and corners keeps its name.No. It is still a square.
Check. Turn a paper shape round and count again. ✓
Watch out. Do not judge a shape by the way it points. Count its sides.
Method. Check each shape against the rule, then put the shapes into two groups.
- Check each shape. Check each shape: is it a triangle, even if it is upside down?A: yes B: no C: yes D: no
- Make the group of shapes that are triangles. These fit the rule. The others are not triangles.Group: A and C
- Write the answer. A and C
Check. Every letter is in one group only. The other group has: B and D. ✓
Watch out. A shape can only go in one group for each rule. Check every letter.
Method. Turning a shape does not change its sides or corners.
- Count the sides of the rectangle. Turning the shape does not change its sides.4 sides
- Count the corners of the rectangle. Turning the shape does not change its corners.4 corners
- Decide if the name still fits. A shape with these sides and corners keeps its name.Yes. It is still a rectangle.
Check. Turn a paper shape round and count again. ✓
Watch out. Do not judge a shape by the way it points. Count its sides.