This website lets you send up to 1 GB files to another person -- what a GREAT tool. I'm using Gspace right now to send a monstrous file to Julie, but if it doesn't work, then I'll be using this website instead. Great tool.
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 - 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.)
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. For elementary age children.