Instructional Video


Curated and Reviewed by Lesson Planet

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.

1 Collection 53 Views 23 Downloads
CCSS: Adaptable
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
  • Highlights proportions must have the same units
  • Uses graphics to show the components involved in cross multiplying
  • None