You need to create simple board games or card games for mathematics topics. There are 5 such topics and hence you will need to create 5 games.
I will give you a game designing toolkit, good resources to look at (books on game designing for teaching mathematics). You need to create -
1) Theme of the game
2) Rules and regulations
3) Point system
4) Details of board or cards or spinners to be used (you can create rough sketches using ppt or word or even hand drawn).
You need to have a creative bend of mind and have an understanding of basic mathematics.
Total games = 5. Fixed budget $50 for all 5 games.
IMP - please share any of your past work in your proposals. You do not need to have designing skills. We have an in-house designer to do that.