Pre-algebra 0 with physics is pretty amazing. This one doesn't have much math, and what's there is very easy. Might be good for easy, fun summer math to maintain skills with decimals and percents. Or for soothing math anxiety
This is the best math textbook I've ever encountered I hold a minor in economics, a Masters in education, have two years of public school teaching and eight years of homeschooling under my belt. I consider myself an experienced learner and Life of Fred is imo some of the greatest educational literature I've ever encountered.
Also, my kids really enjoy it (even the ones that have never liked math).