Instructional Video

Calculating Percentages and Weighted Averages

Curated and Reviewed by Lesson Planet

How do teachers calculate test averages? Viewers learn how to calculate test averages in the fifth installment of an 11-part Math in Science video series. The video consider different situations and grading schemes to calculate weighted and unweighted test averages.

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Additional Tags
Instructional Ideas
  • Provide learners with their test scores to calculate their average
  • Use the video as an intervention tool for those struggling with percentages and weighted averages
Classroom Considerations
  • Video assumes viewers can already convert percents to decimals
  • This video is hosted on YouTube
Pros
  • Video gives a simple, straightforward explanation of the process
Cons
  • In the point system example, the easiest — and probably most often used method — is to add up all points and divide by the total possible points, which is not the method shown in the video