Ratio as Bar Models

Ratios are a fundamental concept in mathematics, often taught using visual representations such as bar models to enhance understanding. Bar models are particularly effective in illustrating the concept of ratio, as they provide a clear, graphical way to compare quantities. By using bar models, students can easily see the proportional relationships between different parts of a whole, making the abstract concept of ratio more concrete and accessible. These models are a helpful tool for students to visualise the distribution of quantities and to solve problems involving ratios in a more intuitive and engaging way.

The phrase "What's the ratio?" prompts students to analyse the provided bar models and determine the ratio between the quantities represented. The repetitive nature of this question across various examples suggests a series of exercises or problems where students are encouraged to practice identifying ratios. In each case, the bar model would depict different quantities, which students must compare to find the ratio. This method of teaching not only reinforces the students' understanding of ratios but also helps them to become proficient in translating visual information into numerical relationships, a skill that is valuable in many areas of mathematics and real-world applications.