In the third century BCE, Apollonius of Perga asked how many circles one could draw that would touch three given circles at exactly one point each. It would take 1,800 years to prove the answer: eight ...

The Hechinger Report covers one topic: education. Sign up for our newsletters to have stories delivered to your inbox. Consider becoming a member to support our nonprofit journalism. Parents know they ...

Test scores, school report cards and Facebook posts complaining about homework problems often drive critiques of how math is taught in schools. Amid the debates, it has become increasingly clear that ...

Matthew Campbell receives funding from the National Science Foundation. Johnna Bolyard does not work for, consult, own shares in or receive funding from any company or organization that would benefit ...