What if math teachers are really pirates and they want us to find x so they can get the buried treasure? A short video explains how to calculate standard deviation and variance with a step-by-step guided practice problem. The formula is easy to understand when applied as shown in the video. 

Concepts

standard deviation, mean, direct variation

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Additional Tags

math

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Instructional Ideas

• Use the video as either an introduction or a review to standard deviation
• Assign as homework in a flipped classroom

Classroom Considerations

• Assumes prior knowledge of sums and how to solve equations
• The first in a set of seven videos

• This video is hosted on YouTube

Pros

• Walks through the problem slowly without wasting time
• Visuals are easy to follow and comprehend

Cons

• Only solves one example problem

Common Core

HSS-ID.A.2 HSS-ID.A.4