2. half
half
half
half
Fractions and Decimals 1

3. Fractions and Decimals 1

4. Fractions and Decimals 1

5. Reflection: What is a half?
Investigation:
Have some paper squares, circles or strips.
Divide them into half.
Check if the parts are equal by superimposing and looking for gaps and overlaps
Record your halves.
How did you make your halves?
Why is a half called a half? What is a half, half as big as?
Reflection: What is a half?
Problem Solving
William drew a circle, and coloured half of it blue.
What might the circle look like?
Fractions and Decimals 1

6. Have many of the same shape.
Investigation:
Have many of the same shape.
Divide the shape into halves in different ways, for example,
Check if your halves of the same shape are equal by cutting up one half and pasting it on the other half.
Reflection: What is a half?
Problem Solving
Susie cut a cake in half.
What might the cake look like?
Problem Solving
Mary covered half of her cake in chocolate icing, and half of her cake in strawberry icing.
What could the cake look like?
Problem Solving
How many different ways can you divide a square in half?
Fractions and Decimals 1

7. Reflection: What is a half?
Investigation:
Have shapes of different sizes.
Divide them in half.
Compare the areas of the shapes and the areas of the halves.
Are all of the shapes and halves the same size?
Which halves have a larger area? Why?
Which halves have a smaller area? Why?
Reflection: What is a half?
Problem Solving
These two halves are made from squares that are different sizes.
Which half was made from the larger shape?
How do you know?
Fractions and Decimals 1

8. Fractions and Decimals 1

9. Reflection: What is a half?
Investigation:
Have a shape to pretend is a cake.
Decorate half of the cake with smarties and half of the cake with choc buds.
Reflection: What is a half?  
Fractions and Decimals 1

10. Reflection: What is a half?
Investigation:
Cut some shapes into 2 parts that are not halves.
Why are the parts not halves?
Reflection: What is a half?
Fractions and Decimals 1