LETTER TO THE EDITOR: Conversion to metric system would be wise Mike Meehan, Las Vegas Saturday, Feb. 28, 2009 | 2:02 a.m.

Learn how to convert between metric and imperial units. Convert cms to inches to feet and kilometres to miles in this GCSE maths revision guide.

In one of the math classes I teach, there are adults from China, Haiti, Ethiopia, Brazil, Colombia, and an array of other countries. The group is about as diverse as you can imagine, but the one ...