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Equivalent ratios lead to proportions. The video provides the definition of a proportion and provides examples of proportions. Using real-world examples, the resource shows how to solve for unknown quantities in proportions using the cross multiplying method.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Conduct a lesson on why cross multiplying is a valid way to solve proportions
Classroom Considerations
- The class should have a solid understanding of ratios
- It is helpful if individuals can solve one-step multiplication equations
- This video is hosted on YouTube
Pros
- Highlights proportions must have the same units
- Uses graphics to show the components involved in cross multiplying
Cons
- None