Cardioid, example drawn for Fall 2013 Visual Mathematics class
Tool needed: compass
Construction: draw a circle and plot regular points along the circle. Choose one fixed point and draw all circles that have as centers the other points along the circle that also contain the fixed point.
For more cardioid fun, and to see what influenced my students, watch Vi Hart’s “Connecting Dots” doodling in math class video.
So, I finally started a subtumblr for all my math/art/teaching doin’s. It’s gonna be all original, y’all.