YouTuber Kevin Lieber (who hosts the popular Vsauce2 series) has brought a classic math magic trick back from its ‘90s heyday. In the video, Lieber walks viewers through a magic trick where they ...
A simple finger trick for the 11 times table is helping secondary school students aged 12 to 16 improve mental arithmetic skills. By separating two-digit numbers, adding the digits, and inserting the ...