Perfect iPhone implementation
I read some of the negative reviews of this app and have experienced none of the problems mentioned. The app gives me the full functionality of the browser version right on my iPhone. Im am using the app to monitor student progress right now since my laptop is down.
XtraMath is the best free math facts program I have found (I would recommend reflex math for those willing to pay the subscription fee.) I xtramath to help struggling high school and college students master what they should have learned in grade school. I also use it myself to improve my arithmetic speed and accuracy in a manner similar to how musicians warm up on scales before practicing more challenging pieces and skills.
I think of the $5 I paid to buy the app as an initial donation to keep the "free" (no cost to me or my students) xtramath website and program running. Well worth it.
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XtraMath