Ratio - Introducing the Ratio Symbol - Worksheet

The lesson on introducing the ratio symbol is designed to help children understand the concept of ratio and the use of the colon (:) as the symbol to represent it. The lesson's objective is to solve problems involving the relative sizes of two quantities using integer multiplication and division facts. Students are provided with differentiated worksheets and teaching slides to aid their learning. The key vocabulary for the lesson includes 'ratio', 'order of parts', and 'symbol'. Students learn to read ratios like "3 : 5" as "three to five" and recognize that the order of numbers is crucial in conveying the correct meaning, such as the difference between "3 bananas for every 2 apples" (3 : 2) and "2 apples for every 3 bananas" (2 : 3).

During the lesson, children engage with pictorial representations to understand and find ratios, and they use these ratios to create their own pictorial representations. They also learn to simplify ratios and ensure that they count the pictorial images accurately. Key questions posed to the students include understanding the meaning of the ratio symbol, the importance of number order in ratios, and how to write and articulate ratios involving two or three quantities. The lesson also involves reasoning and problem-solving activities where students need to identify correct and incorrect statements about given ratios and explain why, further reinforcing their understanding of the topic.