Arithmetic Teacher (1974) Vol. 21, No. 8
e eac r NATIONAL COUNCIL FfEACHERS OF MATHEMATICS er VOLUME 21, NUMBER 8 DEGEMBER 197 4 The end of the dull drill. How would you like to have a device that provides exciting drill and practice in 132 basic computation skill areas on an individdua student basis? A device that allows the student to set his or her own pac
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