Like math? Like puzzles? Then meet Bojagi, a game created by David Radcliffe (@daveinstpaul). It looks simple enough. A grid has a few numbers in it. The goal is to draw a rectangle around each number ...

Kids dread multiplication tables. The endless efforts parents put to help their child memorize the multiplication tables till 10 is hard to put in words. In India, multiplication tables are taught to ...

A long-standing puzzle seems to constrain how addition and multiplication relate to each other. A graduate student has gone further than anyone else in establishing the connection. In 1983 the ...