Does anyone have an opinion of Calculus by Michael Spivak? How does it compare with AOPS calc book in terms of rigor? https://www.amazon.com/Calculus-4th-Michael-Spivak/dp/0914098918/ref=cm_cr_arp_d_product_top?ie=UTF8
My DS 10 took it last year along with Pre Algebra over summer. It was challenging to do both at the same time. What we loved about the class was the capstone project where they had program one ( or more) board games and he had lot of fun doing that. He collaborated with some of his classmates to program mastermind! He is planning to do start intermediate Python this summer.