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
