This video explores scale models, including 1:12 dollhouse models, 1:24 railroad models, and 1:192 architectural models. It explains what the different ratios represent and asks students to consider how they can use measurement and proportional reasoning to create their own scale models. The accompanying classroom activity gives students hands-on practice with creating models to scale and with real-world measurement. This resource is part of the Math at the Core: Middle School Collection.