I modified a little web app to compare two addition algorithms, I read some math books, and I finished 2nd grad math on Khan Academy, all while lying in bed feeling sick all day! My cold is getting worse, but my arithmetic is getting better. ;)
Yesterday Adam Liss wrote a comment pointing out that “5 + 7” is difficult for everyone and that it’s much easier if you break it down into “5 + 5 + 2” – why didn’t I think of that?! Haha, thanks Adam!
Inspired by that, I took this web app by Sarah Fisk and modified it to test if Adam’s suggestion would indeed speed up my mental addition.
- “5 + 7” version (demo and code) – Questions answered in 1 minute: 39, 41, 44
- “2 + 5 + 5” version (demo and code) – Questions answered in 1 minute: 45, 47, 51
Looks like Adam’s suggestion is measurably faster! I did notice one caveat, though: I should’ve switched up the order to make it more random. Maybe I’ll make version 2 tomorrow – or you can fork it and make your own! Let me know if you do.
- Video production time: 3 hours 25 min
- Script writing/preparation: none
- Filming/setup: 27 min
- Video editing: 2 hours 44 min
- Publishing: 14 min
- Math study time: 2 hours 2 min
- Practice problems: 1 hour 31 min
- General research: 31 min
- Goldberg Variations, BWV. 988 by Johann Sebastian Bach, performed by Shelley Katz
- Nonplussed!: Mathematical Proof of Implausible Ideas by Julian Havil
- Original “Math Frenzy” app by Sarah Fisk