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Title: How Japanese kids learn to multiply in primary school Written by: duddy on Jan 14, 2013 (https://biology-forums.com/gallery/47/4_14_01_13_4_32_45.jpeg) (https://biology-forums.com/index.php?action=gallery;sa=view;id=11052) The lines over the circles are colour coded. Notice the single red line and 3 blue lines representing 13 groups together while the single green and 2 black lines take their own group. Simply draw your first group of lines in one direction then your second group of lines going over the first, count the groups of intersections and there's your answer. |