Concentration Grid app (Apple/iOS and Android/Google Play)
#ConcentrationGrid
Apple/iOS AppStore: http://appsto.re/us/Et3J_.i
Android/GooglePlay: http://goo.gl/35WUY1
If you enjoy challenging yourself (and your athletes/students) try the Concentration Grid exercise/app
Post screenshots of your best grid times …
Facebook: www.fb.com/ConcentrationGrid
Twitter: www.twitter.com/ConcentrationGr and www.twitter.com/Grid_IDx
http://cgridid.com/2016/11/27/concentration-grid-exercise-concentrationgrid
#ConcentrationGrid