I found a book called “Trigonometry Self-Taught” by Peter H. Selby, and it was pretty much a choose-your-own-adventure book but for trigonometry. I love this concept, and I wanted to know if any of you knew of any more books like it. Books like this may also refer to themselves as “programmed courses” or “programmed instruction” if that rings any bells.
by Overall_Barracuda_4