The author mentions the HTDP approach - and it’s a really great book, for more reasons than just the careful treatment of recursion - but there’s an even more o

The author mentions the HTDP approach - and it’s a really great book, for more reasons than just the careful treatment of recursion - but there’s an even more obvious book choice for this topic (and it shares an author of HTDP); the little schemer. The Little Schemer is a fraction of the size of HTDP and it’s focussed on this exact problem.