Equations – Cross Multiplication

This Equations – Cross Multiplication video also includes:

Mastering the art of solving a proportion is not only important for algebra, but it's crucial to geometry and statistics as well. A quick video demonstrates the use of cross multiplication to solve a proportion. The lesson includes options for independent practice following the video demonstration.

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CCSS: Adaptable
Instructional Ideas

  • Assign the video for independent viewing and ask pupils to take notes
  • Follow the video with practice solving proportions
Classroom Considerations

  • Relies on previous work with simple proportions
Pros

  • Includes an answer key for independent practice assignments
  • Uses mathematical vocabulary throughout the explanations
Cons

  • None