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Kelvin Ramos and other students work on math projects at the Math Learning Lab on the fourth floor of the library on Monday, December 2, 2019 in Chico, Calif. The Math Learning Lab, a collaboration of the Student Learning Center, math department, and Meriam Library provides drop-in tutoring in the library, which conducted 1,884 tutoring sessions last year thanks to the Chico State Fund.
(Jason Halley/University Photographer/CSU, Chico)
Motlaq Alnassafi (left), Angel Frias (center), Justin Sage (right) and other students work on math projects at the Math Learning Lab on the fourth floor of the library on Monday, December 2, 2019 in Chico, Calif. The Math Learning Lab, a collaboration of the Student Learning Center, math department, and Meriam Library provides drop-in tutoring in the library, which conducted 1,884 tutoring sessions last year thanks to the Chico State Fund.
(Jason Halley/University Photographer/CSU, Chico)
Mikenzie Martinez (left), Brianna Naranjo (right) and other students work on math projects at the Math Learning Lab on the fourth floor of the library on Monday, December 2, 2019 in Chico, Calif. The Math Learning Lab, a collaboration of the Student Learning Center, math department, and Meriam Library provides drop-in tutoring in the library, which conducted 1,884 tutoring sessions last year thanks to the Chico State Fund.
(Jason Halley/University Photographer/CSU, Chico)
フィボナッチがインドとアラビア数学をヨーロッパに紹介した「計算の書」。
「インド人が使ってる１から９までの数字に
アラブ人が用いるzephiro（つまり「０（ゼロ）」を合わせると
どんな数字でも簡単に表現できる。」
中世の数字は現代用いられてるものと殆ど変わらないんだね。（笑）
I've met a couple of people who have gone back to school and they feel uncomfortable with it. The moment class is over they leave for home or their apartment. Because I'm lazy I stay and experience things my contemporaries do not. Like watching your genius classmate lose your joint lab report on a library computer and then really lose it or hearing about their worst date ever in the cafeteria which is dirt cheap because it is dirt.
Going over their differential equations homework. It's near the end of the semester so things are a bit hectic. Nikon D50, 85mm/1.8, Silkypix Developer Studio 3.0 Free edition.
１番左の問題は小学生（１～５年生）
真ん中の問題は中学生（１～３年生）
右端は高校生（１～５年生）以上への問題。
結構難しい（汗）。
今回は真ん中の問題まで１９９９年度２０００年度生まれの子ども達ががんばって解きましたー♪
「６０」という数はとても大事だったそうで、６０は大きな釘で表してた。
ところが彼らには「ゼロ」という数の表し方が存在しなかったため
「６１」と「６０１」の数字を表記する時
その違いは「６０」と「１」の間に少しスペースを開ける・・・という表記となっていたそうだ。（ありゃま・・・笑）