Georgia 8.MP.4
The Standard
Model with mathematics.
Georgia's K-12 Mathematics Standards · Display perseverance and patience in problem-solving. Demonstrate skills and strategies needed to succeed in mathematics, including critical thinking, reasoning, and effective collaboration and expression. Seek help and apply feedback. Set and monitor goals.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students turn a real situation into a table, graph, diagram, or equation. They use the model to make a prediction or decision, then check whether the result makes sense.
What Mastery Looks Like
- Students choose relevant quantities, define variables, and represent relationships with tables, graphs, diagrams, or equations. They use the model, interpret the result in context, and revise it when needed.
Common Misconceptions
- Students may treat any equation as a good model without checking whether it fits the situation. They may ignore units, restrictions, assumptions, or results that make no sense in context.
How to Assess It
- Exit ticket: A taxi charges $4 plus $2.25 per mile. Write a model for m miles, find the cost of 12 miles, and name one assumption.
Lesson moves
Ways to Teach It
Measure classmates' arm spans and heights, graph the pairs, then choose and explain a model for predicting height.
Prompt: Which assumptions make a phone plan cost model useful, and when would the model fail?
Run a Model Match game where teams pair situation cards with tables, graphs, and equations, then defend each match.
Compare two ride share pricing plans and find the trip distance where each becomes the cheaper choice.
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Printable 8.MP.4 Worksheet
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