My son is 5 and has autism. He was preverbal. Lots of babble. We figured he knew his numbers, but could not be sure. He could point to a 3 if you asked for the three, but never showed us 3 items or gave us three of something. He did not correlate numbers to quantity. Until MathGames. Not only did it show him how to count out the items when he got it wrong, which he did every time for ten minutes. But he started to point to the screen and COUNT OUT LOUD in WORDS! Never have I seen him point and say "One, two, tee, foh, fi, si, sehseh, eight, nine, teh". His teacher in kindergarten says he now counts everything out loud while pointing. He answers the questions on MathGames 100% correct now. Wish it went to higher numbers though! 1-50 would be great! Thank you for this amazing app!