Thurs Mar 15th – Dividing an amount by a given ratio

LEARNING OBJECTIVE: Develop methods for splitting an amount in a given ratio

SUCCESS CRITERIA: You will be able to divide a given amount into parts given a ratio

ENGAGEMENT ACTIVITY: Screen 4 from this lesson

To make jam, Josh uses strawberries to preserving sugar in the ratio 3 cups : 1 cup.

• How many cups of each will he need to make 20 cups of jam altogether?
  
• If he has 12 cups of strawberries, how many cups of sugar will he need?
  
• If he has 2 cups of sugar, how many cups of strawberries will he need?
  

LESSON: Us above to develop processes for solving ratio problems (screens 1 to 3 if revision of ratios is needed, repeat question screen s multiple times if needed)

Two powerpoints on page 148 of Year 7 text book for worked examples.

Have a go at Ex 12D on page 149 of text book

EXTENSION: Extension work on page 149