When do you get your CoGat scores? You may be able to use a good quantitative score to advocate for different math. We did this when my teacher-pleaser DD was in 1st grade. The entire first semester of that school year DD told me that math was boring and that the best part about math was that she didn't have to think. When I conveyed the substance of her comments to the teacher, I got ignored. After DD came back with a perfect score on the quantitative section of CoGat, the teacher finally tried some different math with DD. Overall, the teacher starting asking more of DD and, "Surprise!" DD met every new challenge with ease. By the end of first grade, that teacher was the biggest advocate for DD moving into a GT class.
As for free options for math enrichment, DS7 likes
http://www.mathplayground.com/
