depends on what you mean units, and standard.
I grew up on lbs, oz, tons. In high school, we shifted to cgs units. Then in college, we used metric. Then as an engineer, I used English again. Then becoming a teacher, I used metric. Now which was standard, and which will be standard for my grandchildren?
Support why you would teach using a non-standard units lesson?
3 answers
Oh yes, I forgot the two years I spoke spherical trig in navigation.
degrees or radians?