The Physics Teacher, Vol. 42, No. 3, pp. 144–145, March 2004
©2004 American Association of Physics Teachers. All rights reserved.
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REFERENCES

Reference

  1. Educational Innovations Inc., 362 Main Ave., Norwalk, CT 06851; http://www.teachersource.com. first citation in article
  2. PASCO scientific, 10101 Foothills Road, Roseville, CA 95747; http://www.pasco.com. first citation in article

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