ynnad

Primary tabs

ynnad's picture
About me: 

mental calculation level: 2. Kyu

Badges

Country: 
Germany

History

Blog
View recent blog entries
Member for
1 year 3 months

Latest Posts and Comments

Title Type Comments Updated
trigonometric functions Forum topic 0 2 months 2 weeks ago
does the abacus have a real advantage ? Forum topic 6 6 months 1 week ago
Square Roots... Perfect, Irrational, Estimating Forum topic 18 1 year 3 weeks ago