Spent 30 years as a science teacher, math teacher and shop teacher. Like languages, I seldom had students do conversions from one system to another. Yes, I did teach 2.54 cm in an inch and to convert from Celsius to Fahrenheit, add 40, multiply by 9/5 and then subtract 40. If going from F to C, just change the 9/5 to 5/9.
What is interesting is our body temperature 37 C or 98.6 F not the 96 that Fahrenheit was hoping it to be.
So in science we used metric, in shop we used inches and that system.
How many meters in a mile? If you do 4 laps around the track, it is a mile and once around the track is 400 m. Simple conversion.
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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