Put the Point on the Line

THIS USED TO BE A DESMOS ACTIVITY BUT IS NO LONGER SUPPORTED This activity's focus is slope. The goal is to sharpen students’ focus on slope. In particular, the activity asks students to estimate first, then to calculate, then to notice proportionality as they place points on an imaginary line. Use student ideas here to define slope as a ratio of change in y-coordinates to change in x-coordinates. By the time students get to the end of the activity, they should have a number of ways of talking about this, but it’s unlikely they’ll write a fraction with ∆y in the numerator and ∆x in the denominator. They’ll be ready for you to introduce this idea.

By Unsupported Drafts