# Ratios Objective an introduction to ratios Keywords equivalent

• Slides: 19

Ratios Objective – an introduction to ratios. Keywords: equivalent, simplest form and symbol : 06 March 2021 Mr Armstrong

Mr Armstrong has a problem. He needs to decorate a room pink, but only has red and white paint! W R

In pairs think where you would place your paint mixture on the washing line! W R

Launch Pink Paint Program

Ratios – compares the size of one part to another. 2: 1 3: 2 A fraction shows what proportion of the whole shape is shaded.

Ratios – compares the size of one part to another. 2: 1 3: 2 On your number cards write down the ratio of red to white tins of paint.

Order your cards in the order of shades of pink. If you have the same shade of pink then place the card below each other. W R

W R Would you make any changes to the washing line used at the start of the lesson? What would you now do differently if you were to do the task again? What did you learn?

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Play Ratio Speed Challenge on: http: //mrarmstrong. eu 5. org/ratio • Practice your ratio skills. • Check you understand simplest form. • Support for understanding. • Try and top the scoreboard (beat your friends!)

Equivalent Ratios – the same ratios! We could write the number of black dots to white dots as ratio…. . 6: 2 Also for every 3 black dots there is one white dot. 3: 1 The ratio with the lowest possible whole numbers is called the simplest form!

Equivalent Ratios – the same ratios! We could write the number of black dots to white dots as ratio 12 ______ : 3 The simplest form is _______ 4: 1

Ratios Objective – an introduction to ratios. Keywords: equivalent, simplest form and symbol : 06 March 2021 Mr Armstrong

Thank you for your attention! Rat-ios Play Ratio Speed Challenge on: http: //mrarmstrong. eu 5. org/ratio