This PowerPoint mini-lesson introduces your students to the concept of the Mean Absolute Deviation (M.A.D.). It's presented in kid-friendly language, and it walks your students through the process, one step at a time. Most of the calculations use nice, whole numbers. The visual models will help your students understand the concept while they calculate this measure of variation. Check out the Preview file, so you understand what you're receiving on these 15 slides. Want a follow up activity he