Best known as Pi Day, 3/14 is the celebration of the number that begins with 3.14159 … and never ends. Pi (π) is the ratio of a circle’s circumference to its diameter. Or, in other words, just divide ...

Students actively engage in tasks that are doable and interesting—which frees up time for personalized instruction.

Started by CU Boulder applied mathematics Teaching Professor Silva Chang, Colorado Math Circle is celebrating 20 years of bringing middle and high school students together in a community that has fun ...