Sunday, February 13, 2011

Valentine's Day heart graphs

Besides the cardioid, whose name comes from it's heart-like shape, there are some cool graphs out there that people have made to look like hearts.



I think this is the best-looking one:



Here's a picture to help students practice plotting points (and help start a discussion of symmetry), which I made with my Graph Art program from awhile back.



The Points:
(-2,2)
(-2,4)
(1,6)
(4,4)
(5,0)
(5,-5)
(0,-5)
(-4,-4)
(-6,-1)
(-4,2)
(-2,2)
--break--
(5,5)
(7,6)
(6,7)
(5,5)
(2,2)
--break--
(-2,-2)
(-6,-6)
(-6,-5)
(-7,-7)
(-5,-6)
(-6,-6)


But, if your mother doesn't appreciate graphs as much as flowers, here are a few Valentine's Day gift ideas

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