好家伙
好家伙！一个三年级小孩，一年干完六年数学，还在 AP 微积分考了满分 5。
发帖的老哥是 Math Academy 的课程总架构师，花七年画了张覆盖 3000 多个数学知识点的图，从四年级一路铺到大学。
Alex Smith @ninja_maths For anyone wondering how a third-grader can complete six years' worth of math in a single year AND score a 5 on the AP Calculus exam.
This knowledge graph spans 3,000 math topics, from 4th grade to the university level, providing the perfect basis for mastery learning.
