When my kids were in elementary school we had an evening program called Family Math. We did a lot of fun activities that used your math brain, but it wasn’t sitting around doing math problems. This is the sort of activities we’d do: http://www.proteacher.org/c/875_Family_Math_Night.html I’d imagine a math camp would be more like this than going to Kumon and practicing you multiplication tables. At least I hope it would be!