iPhone iPod Touch version - math game for kids that is free. Why not download this for the car and let them play it a bit to help them with math as you travel. Recommended or elementary age children aged 4-10.
Free Christmas game for math for your ipad. Students can download and play. This helps with sequencing. I recommend this for children. This is part of the 12 games of Christmas that is free from tes. If you have ipads in your elementary school (ages 4-10) - this is a definite download. (Note: Full disclosure, I do work for TES promoting products of theirs that I like. What I feature is totally up to me. See my blog for details.)