Possibly useful for π day

Circle area (animation)
https://www.mathed.page/constructions/pi/index.html

Leonardo's Areas
https://www.mathed.page/puzzles/polyarcs/leonardo.pdf

π for regular polygons?
https://www.mathed.page/geometry-labs/polygon-pi/index.html

Taxicab π:
https://www.mathed.page/geometry-labs/labs/taxicab-geometry.pdf

#mtbos #iteachmath #mathed