MATH 51 is a rite of passage for many Stanford students. And over the years, it has acquired a reputation as a challenging course (which may now be outdated given the major overhaul it has undergone).

Student work posted in an elementary school before the pandemic shows the “partial product” method of solving a multiplication problem, one of many methods students have learned with Common Core.

LONDON, ENGLAND - OCTOBER 21: Startup Battlefield Finals, PhotoMath appear on stage at the 2014 TechCrunch Disrupt Europe/London, at The Old Billingsgate on October 21, 2014 in London, England. (Photo ...