Lesson objective: Solve problems involving proportional relationships.
This lesson provides an opportunity for students to apply their knowledge and understanding of proportional relationships to a real-life situation. Students are asked to resize photos to a certain length for a photography exhibit.
Key Concept students will use:
- In a proportional relationship, as one quantity changes, the other quantity changes in a way that preserves the multiplicative relationship.
Skills students will use:
- Creating ratio tables to scale dimensions up and down
Students engage in Mathematical Practice 4 (Model with mathematics) as they identify important quantities of the pictures and frame and map their relationships using models and ratio tables.
Key vocabulary:
- proportion
- ratio table
- scale up / scale down