VILLA RICA, Ga. -- It was meant to explain, but it's left many scratching their heads. Villa Rica Elementary posted the video of fourth-grade teacher Mrs. Jiles explaining "Area Model" math on its ...

Villa Rica Elementary posted the video of fourth-grade teacher Mrs. Jiles explaining "Area Model" math on its Facebook page to assist parents who want to help their children with their math homework.

Gauri Sankar Datta, J. N. K. Rao, David Daniel Smith, On Measuring the Variability of Small Area Estimators under a Basic Area Level Model, Biometrika, Vol. 92, No. 1 ...