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# Introducing Adding and Subtracting Fractions

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by

## Mr Mattock

on 9 April 2016

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#### Transcript of Introducing Adding and Subtracting Fractions

Main Activity
Draw diagrams to complete these fraction calculations
L.O. - Understand adding and subtracting
fractions with diagrams (Level 6)

Starter
Draw two rectangles.
Both have to be the
same size.

One will be broken
into 4 pieces and one
into 3 pieces.
Starter
Draw two number lines.
Both have to be the
same size.

One will be broken
into 4 pieces and one
into 3 pieces.
in the first rectangle and 2 boxes in the second.

Draw a third rectangle the same size and combine the shading from the first 2 (without overlapping)
in the first rectangle and 2 boxes in the second.

Draw a third rectangle the same size and combine the shading from the first 2 (without overlapping)
Subtracting Fractions
in the first rectangle and 2 boxes in the second.

Draw a fourth rectangle the same size and shade the difference between the first and second rectangle
Main Activity
Draw four rectangles with width of 1. All 4 have to be the same size.

Use your four rectangles to show

and
4 1
9 6
+
4 1
9 6
-
Example
Draw four rectangles with width of 1. All 4 have to be the same size.

Use your four rectangles to show

and
4 1
9 6
+
4 1
9 6
-
4 1 11
9 6 18
+ =
4 1 5
9 6 18
- =
Subtracting Fractions
in the first rectangle and 2 boxes in the second.

Draw a fourth rectangle the same size and shade the difference between the first and second rectangle.
Red
Amber
Green
Main Activity
Draw diagrams to complete these fraction calculations
Red
Amber
Green
11 19 1 13
12 20 7 24
5 7 19 4
18 30 20 21
1 1 3
3 6 10
Dice of Ultimate Power

1) Give a key word for the lesson.
2) Summarise one key point for the
lesson.
3) Explain one thing you have learned this
lesson.
4) State one thing you still don't understand following this lesson.
5) Suggest one thing you would like to find out
based on this lesson.
6) Free choice from 1 to 5, or another you make
up.
Key
Examples

Activities
Activity