[yinzer-solomon]

IIRC, “Simply Scheme” describes several different recursion patterns, and it provides a number of exercises that match each pattern.

[eatonphil]

Thanks for sharing that! Hadn't heard of it. On my list now.

[yinzer-solomon]

My pleasure. As iainctduncan mentioned, the authors are wonderful teachers, and the book serves as a good warmup before diving into SICP.

[iainctduncan]

It's good, and free online, and the authors are both wonderfully generous people.