Eventually, we simply flat out told the teacher that our son wouldn't be participating in the homework nor any in class math work until they were teaching something that would be new grounds for him. It wasn't a threat, it wasn't being difficult, it was simply informing them so they'd know.

All too often we as adults see our time as valuable but we don't view a child's time as valuable. Combine that with increasing frustration levels and as a parent eventually you get to the point where you say, "That's it, that's enough, this just isn't going to happen anymore. I'm not putting my kid through this."

I figured what's the worst thing that can happen in elementary school? My child will get an "Unsatisfactory" in math? I can live with that.