Expii Solve is a weekly set of free online math problems that aims to show the beauty of math and help students develop a greater appreciation for the subject. Rather than emphasizing rote memorization and drill-and-kill exercises, these problems focus on logic and critical thinking to “show the amazing beauty of math."

The purpose of Expii Solve is to get kids—and adults—to approach math as an art. “When people look at art, they say, ‘neat!’ It makes you feel some kind of emotion,” says Loh. “But if you try to teach art by telling exactly how to hold the brush, measure the hues of each color and mix in exact proportions, and then assess students not by painting a picture but how well they can do these steps, everyone will say, ‘I hate art.’”