I have an 8 year old ds, who I've been using Harcourt Horizons grade 3 math with this year. It doesn't seem to be a great fit for him. He picks up concepts really quickly, but he lacks self confidence with math. We will cover a concept one day with this program and may not readdress it again until days later. He shuts down, to include tears, because he feels like he should already know how to do the problem when we do come back to it. For this reason, I'm not sure a spiral-based approach is best for him and think he might do better with a mastery type program. He was in a Montessori program for 3 years, so his math foundation used a lot of manipulatives. This background made me consider MUS, but I've read mixed reviews of the program.
This is our first year homeschooling, so I'm a little overwhelmed by all the options. I appreciate any help you all can provide!