Maths has always been my favorite subject. I participated at maths contests and Olympiads in school period, now at university I still love it and I'm still good at it.
My experience in preparation for contests, for keep being one step ahead of others at university maths, my teaching experience (with children of 9-15 years) could be useful for your project.
I'm really excited to do something like this not only for money, but also for my own pleasure.
If you think that my help could be useful for you, contact me.