The 'new math' we've come to abhor had to be supplemented by the old exercises in the old books, which dated from the 80s.
PUTIN'S WAYPutin's Friend Profits in Purge of Schoolbooks
By JO BECKER and STEVEN LEE MYERS
When the number of approved textbooks for Russia's 14 million schoolchildren was slashed by more than half, one publisher with close ties to President Vladimir V. Putin profited handsomely.
The question for Microsoft, as with many American companies doing business in Mr. Putin’s Russia, is whether the potential profits outweigh the risk. United States law forbids American companies from doing business with companies majority-owned or controlled by sanctioned people like Mr. Rotenberg.