Description
Item Description:"Funded by the U.S. Department of Education, Office of Educational Research and Improvement."
"NCTM; NSTA, National Science Teachers Association"--Cover.
Shipping list number: 96-0137-P.
"ENC 96-012"--P. [4] of cover.
Physical Description:v, 32 pages : illustrations ; 28 cm.
Bibliography:Includes bibliographical references.