The Montesouri teaching system uses centimetres. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of James R. Frysinger Sent: 07 February 2011 22:29 To: U.S. Metric Association Cc: U.S. Metric Association Subject: [USMA:49797] Re: STEM metric proposal
Tim, There are plenty of us out here (scientists, engineers, consultants, ordinary people, etc.) who disagree with Robert's position on centimeters. We happen to think that they are just fine and dandy. In fact, you may have read some of my recent postings about teaching kindergartners to measure things in centimeters (that scale best suits them) and to use a meter stick marked off in centimeters but not millimeters as a number line to accomplish addition of two-digit numbers. If it makes you feel any better, centimeters are considered to be just fine and dandy by the likes of the CGPM, the CIPM, and the BIPM. And, hey! They are the ones who maintain and administer the SI! Nobody is forcing Robert or the others in his camp to use centimeters against their will. Do not allow them to force you to shun centimeters against your will. I would like to see Americans adopt the entire SI, not just the parts favored by some people. Jim On 2011-02-07 1614, Robert H. Bushnell wrote: > 201 Feb 7 > Tim, > 1. You have an error in the cost of item 1) > The error is in line d. (which you list as c.) > 1000 x $280.00 is $280,000.00, not $2,800,000.00. > > 2. For the classroom kit item 1) you show 30 cm rulers. > Society should generally avoid centimeter. Centimeter is too coarse a > unit and does severe damage in commercial use and to efforts to get > rid of inch-pound units. I recommend that item 1) be 300 mm rulers. > > 200 mm rulers from USMA show 20 cm on the back (without > millimeter marks). This is a mistake and is useful only for first > grade teaching to count. We do not need to contaminate > measurement with centimeter. Counting can be taught with other tools. > > Good luck. > Robert Bushnell > > > > -- James R. Frysinger 632 Stony Point Mountain Road Doyle, TN 38559-3030 (C) 931.212.0267 (H) 931.657.3107 (F) 931.657.3108
