Numeracy Resources

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 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.

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.

Teachers can use these materials to help students develop algebraic reasoning and learn how to use algebra as a tool in problem-solving. Students also learn about mathematical symbols and how they are used. Part 2 focuses on (1) four different uses for variables in math; (2) how to combine like terms and solve equations using tape diagrams; (3) using variables in scientific and geometric formulas, including finding the volume of three-dimensional figures and the Pythagorean Theorem; (4) evaluating systems of equations through guess and check and matching systems of equations to real-life situations; and (5) understanding, solving, evaluating, and graphing inequalities.

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.