In the early 1970s mathematician Donald Knuth spent a sabbatical with his wife in Norway. The time was meant to be spent relaxing. Yet one night he woke up his partner in a state of agitation. He ...

These clever hacks will help your kids estimate the number of jelly beans in a jar, leaves on a tree, and more.

More than 150 years ago, the economist and philosopher William Stanley Jevons discovered something curious about the number 4. While musing about how the mind conceives of numbers, he tossed a handful ...

Jean-Charles Pelland's work has been made possible by financial support from the ‘QUANTA: Evolution of Cognitive Tools for Quantification’ project, which has received funding from the European ...

4 quick and easy ways to convert numbers stored as text to real numbers in Excel Your email has been sent Software Installation Policy Five Methods to Insert a ...