Dad teaches me how to subtract (Math Immersion Month Day 23)

I’m 70% done with 6th grade math on Khan Academy, but subtraction still drives me crazy! My dad taught me a new subtraction algorithm, which was apparently the most common algorithm taught between 1700 and 1900 – but more on that later, once I figure out how to get access to the academic journals. ;)

Time breakdown

Note: I also spent hours editing interview footage but I’ll tally up the editing time for those videos when I publish them.

  • Video production time: 1 hour (estimated)
    • Script writing/preparation: none
    • Filming/setup: 15 minutes (estimated)
    • Video editing: 31 min
    • Publishing: 15 min
  • Math study time: 2 hours
    • Practice problems: 2 hours