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180 Ways to Use Estimation 180: Inequalities

Estimation 180 is an incredibly rich resource that offers photographs that we can use in meaningfully developing students' number sense. In this blog post, the author uses 4 of the images (and the students' estimates about those images) to quickly and meaningfully introduce (or review) graphing and writing inequalities.

Desmos: Linear Inequalities in Standard Form

Desmos is an online graphing calculator. Many teachers have created activities for their classes using the calculator. Activities on the site are created by teachers and Desmos staff and will vary. You can also create your own activities.

If Graphing Linear Inequalities Is Aspirin, Then How Do You Create the Headache?

Brief blog post by Dan Meyer that addresses teaching students not just the procedure for how to graph linear inequalities, but providing the opportunity for them to consider why the conventional representation (graph) is an efficient way to go.

What Michaels’ coupon should you use?

A good activity from Robert Kaplinsky to compare when one coupon might be better than another. Can be done with or without inequalities. Can also be extended to graph the inequalities.

College & Career Readiness (CCR) Math Standards

Looking for more specific information about the College & Career Readiness (CCR) Math Standards? Check out the CCRS Math Resources section of the CCR Standards resource library!