AUTHOR
Australian Science Education Project
15
Cunningham, John D.
10
National Council of Teachers of Mathematics
10
Nuffield Foundation. Secondary Science Project
9
National Science Teachers Association
8
Hirsch, Christian R.
6
General Certificate of Secondary Education
5
Hewitt, Paul G.
5
Muschla, Gary Robert
5
Muschla, Judith A.
5
Philippines. Department of Education
5
School Mathematics Study Group
5
Yeap Ban Har
5
Brahier, Daniel J.
4
Mae, A.J
4
Posamentier, Alfred S.
4
University of the Philippines (Diliman). Science Education Center
4
Wilson, Patricia S.
4
Asia and the Pacific Programme of Educational Innovation for Development
3
Atkinson, Gordon
3
Bassler, Otto C.
3
Beberman, Max
3
Bitter, Gary G.
3
College Entrance Examination Board. Commission on Mathematics
3
Collette, Alfred T.
3
Coxford, Arthur F.
3
Cummine, J.A
3
Diaz, Eden C.
3
Gerver, Robert
3
Graham, Alan
3
Husen, Torsten 1916-
3
International Institute for Educational Planning
3
Kolb, John R.
3
Lawson, Anton E.
3
Levine, Joseph
3
Miller, Kenneth R. 1948-
3
Ogena, Ester B.
3
Philippines. Department of Science and Technology. Science Education Institute
3
Rabago, Lilia M.
3
Salandanan, Gloria G.
3
Santos, Rosita G.
3
Screen, Peter
3
Teh Keng Seng
3
Trowbridge, Leslie W.
3
Unesco
3
Vaughan, H.E
3
Watts, Mike
3
Wilkinson, John Wesley
3
Addison-Wesley Publishing Company
2
Andersen, Hans O.
2
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