TorstenBerg

Primary tabs

TorstenBerg's picture
About me: 

Biologist and oceanographer, got interested in mental math by a fascinating story about Wim Klein and by learning the chinese (and later the japanese) abacus.

Badges

Country: 
Germany

History

Blog
View recent blog entries
Member for
2 months 4 weeks

Latest Posts and Comments

Title Type Comments Updated
More division tricks. Numbers ending in 1 or 2 Forum topic 4 1 month 6 days ago
Paper on calendar calculations – determine the year’s share for the day-of-week Forum topic 1 2 months 11 hours ago
Chinese short division Forum topic 8 2 months 1 week ago
Soroban and flash anzan Forum topic 7 2 months 3 weeks ago
New member, 49 y, from Germany Forum topic 3 2 months 4 weeks ago
Help choosing a system for mental math Forum topic 21 1 month 3 weeks ago
Markdown. Forum topic 6 2 months 3 weeks ago
Mental Calculation - Division - Resources? Forum topic 26 1 month 1 week ago
Memorizing the Periodic Table for time Forum topic 8 2 months 3 weeks ago