Our school district piloted both My Math and Envisions this year, but in the end we went with Envisions.
However, even though I did not pilot that program, I did hear good things about it, and when I looked through the text book/teacher manual, I did like the way it was set up and the ideas for differentiation that were given.

I am not sure about supplementing materials, but with my experience on Envisions, it moved very quickly, and I think My Math did too, so if students don't pick up the concept immediately, you would have to find extra examples for more practice.

Hope that helps a little!!

Same here..... we had training this week and it looks pretty good. We will be using the New York common core version.

Our school is doing the same. I posted earlier this spring/summer asking the same question and didn't get any response either so I am assuming it is so new that not many have experience with it. I know when I heard the presenter show us the program it was impressive, so I am hoping it is good. We did Saxon before. Good luck as well.

My district is switching to My Math this year. Anyone have any experience with it? Do you like it? We're in full implementation of Common Core and wanted to know if it aligned well or needed a lot of supplements.