The same friend who told me about The Grading Game told me about this. At the time she was teaching her 7-year-old algebra with it. Now, her kid is smart, but whoa. So I checked it out for myself. Math and I are not friends. When I need supplies at Home Depot I ask the clerks to check my numbers for me. If I didn’t I would have bought 10x more backsplash material than I needed to. No lie. But this game made algebra doable even for me. I actually understood. Since that time they’ve released a whole bunch of games at several different levels and I highly recommend them. Your kids won’t even know they’re learning.

https://dragonbox.com/