PHS Middle School Math Class Practices Measures of Variation Apr 12 2018 In order to practice working on measures of variations, students in Mrs. Kim Davenport's math class creating equations on poster boards to give them a new view of their class work. Submitted by Kalli McMillan Permalink: https://www.walton.k12.fl.us/2018/4/phs-middle-school-math-class-practices-measures-of-variation