*Layman Allen devised games like "WFF 'n proof" and Equations which reduced absenteeism, increased math achievement and achieved voluntary integration in the segregated Chicago school system. [http://o.b5z.net/i/u/6035566/f/pdfs/articles/chicagoreader.pdf] | *Layman Allen devised games like "WFF 'n proof" and Equations which reduced absenteeism, increased math achievement and achieved voluntary integration in the segregated Chicago school system. [http://o.b5z.net/i/u/6035566/f/pdfs/articles/chicagoreader.pdf] |