No calculators. No paper. No pens. Only own wits.
A rural Russian school. The late XIXth century.
Is it too much for you?
Raidho
Москва
ملحق شده:
I never saw a wild thing sorry for itself...
Mental calculation
Nikolay Petrovich Bogdanov-Belsky. Mental calculation. In the public school of S.A. Rachinsky (1895).
No calculators. No paper. No pens. Only own wits.
A rural Russian school. The late XIXth century.
Is it too much for you?
No calculators. No paper. No pens. Only own wits.
A rural Russian school. The late XIXth century.
Is it too much for you?
