Bell Ringer Dolbear's Equation - Linear equation
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# Bell Ringer Dolbear's Equation - Linear equation

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Subject
Resource Type Activity
Standards Alignment
Common Core State Standards

Dolbear theorized that the temperature can be computed by counting the number of times a cricket chirps in 15 seconds, and then adding 40 for the temperature in degrees Fahrenheit. For example, if a cricket chirped 20 times in 15 seconds, Dolbear theorized that would mean that the outside temperature was 60 degrees Fahrenheit. Aligned to Common Core State Standard: 8.EE.6

## Resources

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Bell_Ringer_Dolbears_equation.docx

Activity
February 12, 2020
192.53 KB

### Standards

Use similar triangles to explain why the slope ? is the same between any two distinct points on a non-vertical line in the coordinate plane; derive the equation ? = ?? for a line through the origin and the equation ? = ?? + ? for a line intercepting the vertical axis at ?.

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