This is a great tool if you want a free pdf converter. Often you get resources from the internet that are in PDF format and you cant manipulate them for your class. Well here is your solution.
Lots of good Internet based games: e.g Algebra puzzles which could be used to form the basis for a lesson or also could be used as an intro warm up or early finishers activity. Most activities would suit upper primary, however some extension students would benefit from playing the games.
Has a good selection of logic games e.g. factory balls and popular games, such as battleships.
Has a good selection of instructional maths videos, which look very useful.
"There was 5 exabytes of information created between the dawn of civilization through 2003, but that much information is now created every 2 days, and the pace is increasing."