JOINT DODIIS/CRYPTOLOGIC

M.2.2.13 Make rough-estimate approximations of standard US measurements. Materials: Chalkboard, unruled straight edge, or meter stick for student use, yardstick for instructor use. Activity: Competition in which students each get a chance to draw, with help of a straight edge, 3 distances on the chalkboard: 1 inch, 1 foot, and 1 yard. ................
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