I just noticed you said your child was a teenager, so Blossom and Root and Math Tango would be too little for them, but there are definitely great tools for the

I just noticed you said your child was a teenager, so Blossom and Root and Math Tango would be too little for them, but there are definitely great tools for the older group. Dragon Box Algebra is a fun one. If you can tell me a little more about their grade level and activities they enjoy privately or on this thread, I'd be happy to point you in some directions. If you are set in staying in a traditional school environment, I think you are going to have to work with the system to provide them curricula that is more conducive to how they learn well.