Algebra is very visual. Picture the variables and parentheses and constants just moving around, like a choreographed dance. Same with calculus, picturing the curves and areas and surfaces, until you start hitting more than 3 dimensions.

Thanks for the link!

Actually, I did struggle with algebra, and also calculus and differential equations. As with most on this site, I fell into an "advanced"/"gifted" cohort, but I was always down at the bottom of the class.

I excelled (relative to my peers, not to truly gifted people) at linear algebra, statistics, systems engineering, and combinatorics.

I think in images and abstractions and algebra/math came very easy to me. I couldn't really describe to someone how it looks in my head though.