### Present Remotely

Send the link below via email or IM

• Invited audience members will follow you as you navigate and present
• People invited to a presentation do not need a Prezi account
• This link expires 10 minutes after you close the presentation

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

# Understanding Ratio

No description
by

## Mr Mattock

on 22 September 2017

Report abuse

#### Transcript of Understanding Ratio

Writing and Simplifying Ratio
Starter
Simplifying Ratio
L.O. - To write ratio and simplify ratio.
Main Activity 2
Red
Amber
Green
Examples
Simplify:

15 : 25

60 : 72

12 : 16 : 28
Red
Amber
Green
Red: (1) 16 children (2) 7 adults

Amber (3) 30 children (4) 10 children.

Green (5) 12 children (24 in first nursery,
36 in the second).
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.
Simplifying Ratio
Examples
Simplify:

15 : 25
3:5

60 cm : 7.2 m
1:12

12 : 16 : 28
3:4:7
For each picture, write: (a) the fraction shaded
Starter
For each picture, write: (a) the fraction shaded
3 5
8 8
7 3
10 10
Starter
For each picture, write: (a) the fraction shaded
3 5
8 8
7 3
10 10
Starter
For each picture, write: (a) the fraction shaded
3 5
8 8
7 3
10 10
3:5

7:3
Writing Ratio
What is the ratio of
the distance across
to the distance up?
Writing Ratio
What is the ratio of
the distance across
to the distance up?
2:1
Writing Ratio
Write the ratio of the
Write the ratio of the distances across to up.
Writing Ratio
Write the ratio of the
Write the ratio of the distances across to up.
2:6
3:2
11:13
10:17
9:7
18:46
4:3
3:7
3:1
5:1
4:3
2:1
4:2
6:3
How does this
diagram show that
all 3 ratios are
equivalent?
Simplifying Ratio
2:1
4:2
6:3
How does this
diagram show that
all 3 ratios are
equivalent?
Which ratio simplifications do these
diagrams show?
Simplifying Ratio
Which ratio simplifications do these
diagrams show?
2:6 = 1:3
10:2 = 5:1
4:8 = 3:6 = 2:4 = 1:2
Key
Examples

Activities
Activity

Worked
Example

Worked
Example

Worked
Example

Worked
Example

Worked
Example
Full transcript