In this lesson, children will calculate ratios in a range of ways. Bar models and other representations will support their understanding. There is a teaching presentation and three levels of worksheet (working towards, expected and greater depth) with a range of fluency, reasoning and problem solving questions. National Curriculum Objectives: Mathematics Year 6: Solve problems involving the relative sizes of two quantities where missing values can be found by using integer multiplication and division facts. Differentiation: There are three levels of differentiation in this pack: 'working towards,' 'expected' and 'greater depth'. Level of this Pack: Age: 10-11  England & Wales: Year 6  Scotland: Primary 6  Rep. Ireland: Fifth Class  Australia: Grade 5  USA: Grade 5 #Spring Block 6...