Just a suggestion. But I'm old enough to have been in the elementary school system when the changeover occurred over to metric! One thing I have always remembered, is that it was a decision at our school, that "conversion" was NOT the way to go. Re-learning the NEW way was.
Again, over the years, I've heard lots of little tricks to mentally calculate temperatures, and weights, but I found the best way was just to start using the US system. You'd be surprised how easy it is not to convert!
Just my 2 cents worth!
Carla
Just in the 5 years that I've been with Gene, I've learned this! When I do talk to other Canadians, or I'm writing about our weather, I do use the links that JerseyGirl supplied...it's actually funny that I'm using the tools though to calculate so that I can talk to my fellow Canadians!