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 5 months

Latest Posts and Comments

Title Type Comments Updated
trigonometric functions Forum topic 0 4 months 1 week ago
does the abacus have a real advantage ? Forum topic 6 8 months 5 days ago
Square Roots... Perfect, Irrational, Estimating Forum topic 18 1 year 2 months ago