Mathematics Teacher (1997) Vol. 90, No. 4
APRIL 1997 Volume 90 Number 4 !1!11 • PYRAMIDS SLOPE • BALLOONS Tl created the Calculator-Based Ranger (C'BR }, an intelligent motion detector that makes collecting and analyzing data faster, easier and mote accurate than ever. To help you get started right wcay. the C'BR comes complete with built-in programs and class
This is available to members of NCTM. Please log in now to view this article. If you are interested in a NCTM membership join now.