Should we teach Tau instead of Pi?
In the last 20 years, a growing movement has been calling for Pi (π or 3.14…) to be replaced by Tau (τ), which equals 2π or about 6.28. Students should be taught Tau, the argument goes, because it makes many concepts and equations more elegant and informative. And, the argument continues, nothing is lost by converting from Pi to Tau. Tau, like Pi, …
