Memorizing the Multiplication Facts

AniMELov  deserves praise for asking this question at 13 years.  Where was the third grade teacher?   It doesn’t matter at this point.  It’s wonderful that you are learning them now.  There’s lots of math ahead.  I wish you were in my algebra class!  A concerned eighth grader asks

phi

Vi Hart: Math Promoter

Vi Hart tweeted a link to this song about Phi, the Golden Mean. It’s not quite a Bach fugue, but it’s real…or is it transcendental?. I ♥ φ  Λ  I ♥ ♥

Inverse Variation

Let’s assume you have a pie to share with your friends. Each will receive a piece the same size. Is it not intuitively obvious that the size of the piece varies inversely with the number of friends: more friends, smaller piece; fewer friends, bigger piece.