Get a direct stretch from a spring. The presentation shows how Hooke's law uses direct variation. Scholars see how to calculate the spring constant for a spring given a stretch distance and a force. Individuals then use the spring constant to find the stretch for a different force and determine whether the distance is reasonable.

Concepts

hooke's law, direct variation, constant of proportionality, proportions, constant of variation, linear equations, linear equations writing, solving for 1 variable, solving equations

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Additional Tags

math

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Instructional Ideas

• Gather different springs and have the class measure the stretch based on different weights and calculate the spring constant for the springs

Classroom Considerations

• Pupils should be able to solve one-step linear equations
• Assumes learners know how to convert an improper fraction to a mixed number and a decimal equivalence

• This video is hosted on YouTube

Pros

• Highlights needed information within the problem
• Explains the importance of using the same units throughout the problem

Cons

• None

Common Core

SL.7.2 7.RP.A.3 MP1 MP6