I am a 65-year-old who was born in England and I still know my times tables and I can still say them backwards. I see people using calculators and I have the answer before they have. My own grandchildren do not even know their times tables as they are not taught the way we were.
http://www.chinadaily.com.cn/opinion/2016-07/15/content_26101880_4.htm
Nothing on drug opum, simplu on math only.
http://www.chinadaily.com.cn/opinion/2016-07/15/content_26101880_4.htm
Nothing on drug opum, simplu on math only.
