# Making Deviation Standard

### Resources for this lesson:

> Glossary

> Calculator Resources

> Teacher Resources: Instructional Notes

To get your mind thinking about the separate yet equally important subjects of mathematics and American history, try and solve the following mathematics problem hidden in President Abraham Lincoln’s Gettysburg Address:

## Check Your Understanding

When presented with a data set or situation, there are some general steps you can follow to solve the problem.

## Check Your Understanding

# Problem Solving Steps

Click each step to read its description.

1. Create and AnalyzeLook at the data and ask yourself, "What is the problem I'm trying to solve?" Find various ways to model the mathematics, such as with a graph, table or equation. Make sense of the problem you are working with by reasoning through concepts you already know that may help you solve the problem.

2. Test and ConfirmAnalyze the models and representations to develop strategies you think work best to solve the problem. You may need to try a few strategies and models until you get the one that is best. Persevere in solving the problem. Continually ask yourself if the steps you are following and what you are calculating make sense in the context of the problem. Don't be afraid to go back and find a new strategy if necessary.

3. Apply the ModelEmploy your chosen models, representations and strategies. Input the necessary data, quantitative values, etc., and perform the necessary calculations with precision. Analyze the final results. Do they make sense in the context you have?