Multiplication and division - Scaling - Presentation

The lesson on scaling within the context of multiplication and division engages students through a series of activities that utilise bar models to visualise and solve problems. Scaling, a mathematical concept, is applied to real-world scenarios, prompting students to consider its practical uses. For instance, the lesson poses a situation where there are three times as many girls as boys in a playground, and students are encouraged to represent this using a bar model. They are tasked with identifying the correct bar model that illustrates the scenario and to draw their own models to represent similar situations. These activities help students grasp the concept of scaling by visual representation and comparison.

Further activities prompt students to apply their understanding of scaling to different contexts, such as determining the number of cars in a car park with a specific ratio of blue to red cars, or calculating the quantity of Lego pieces one child has in comparison to another. The lesson also incorporates reasoning tasks where students must decide which statements are correct based on their understanding of scaling, and solve problems involving the total number of people at a concert or the number of boys and girls in a playground. The lesson culminates with independent work, where students use bar models to solve division problems and reflect on the value of scaling in problem-solving. These exercises are designed to reinforce the concept of scaling and to encourage students to critically analyse and solve scaling problems.