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Mrs Miele

This week, we are revising ratio and proportionThese words can be confusing. On a bottle of orange squash it might say "dilute one part concentrate to four parts water".

 

 

 

 

 

 

 

Ratio compares the two quantities. Here, that is squash (1 part) and water (4 parts)

squash : water

1 : 4

 

Proportion tells us how much one part is of the whole. Here, one fifth of the drink is squash. This is often written as a fraction.

 

You can summarise this as ratio is part to part and proportion is part to whole.

Introduction videos

ratio introduction

proportion introduction

 

 

Monday - proportion recipes

Watch: https://corbettmaths.com/2013/05/16/recipes/

 

mymaths task:

  1. proportion introduction
  2. scaling and rate problems

 

Do as many of these fluency questions as you can in the time on paper or in a blank word document.

Tuesday – ratio

mymaths tasks:

  1. ordering and simplifying fractions
  2. ratio introduction
  3. modelling ratio

 

If you need a reminder, you can watch this video on simplifying ratios.

 

Wednesday – ratios and comparing

Watch: https://corbettmaths.com/2017/03/26/19366/

 

Do p33 and 34 in your CGP book.

Thursday – sharing the total

Watch: https://corbettmaths.com/2013/03/03/ratio-sharing-the-total/

 

mymaths task:

  1. ratio dividing 1
  2. extra challenge: ratio dividing 2

 

Do as many of these fluency questions as you can in the time on paper or in a blank word document.

Friday

Arithmetic paper

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