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- Nuffield Foundation 21 results
- Scottish Education Department 21 results
- Schools Council, Nuffield Foundation 20 results
- Katagiri, George 16 results
- Science Education Center, University of the Philippines 15 results
- Tompkins, Gail E. 14 results
- Philippines. Department of Education 12 results
- Adorio, Mercedes P. 11 results
- Ashlock, Robert B. 1930- 11 results
- Billstein, Rick 11 results
- Libeskind, Shlomo 10 results
- National Council of Teachers of Mathematics 10 results
- Carin, Arthur A. 9 results
- Harlen, Wynne 9 results
- Long, Calvin T. 9 results
- Philippines. Department of Education, Culture and Sports. Division of Iloilo (Zone III) 9 results
- DeTemple, Duane W. 8 results
- Fay, Leo C. 8 results
- Musser, Gary L. 8 results
- Philippines. Bureau of Elementary Education. Curriculum Development Division 8 results
- Philippines. Bureau of Elementary Education. Third Elementary Education Project 8 results
- Abruscato, Joseph 7 results
- Baldo, Trinidad C. 7 results
- Biological Sciences Curriculum Study 7 results
- Copeland, Richard W. 7 results
- Gega, Peter C. 7 results
- Gollnick, Donna M. 7 results
- Kennedy, Leonard M. 7 results
- National Science Teachers Association 7 results
- Victor, Edward 1914- 7 results
- Blough, Glenn Orlando 6 results
- Burger, William F. 6 results
- Diaz, Leonor E. 6 results
- Ellis, Arthur K. 6 results
- Fajardo, Amelia C. 6 results
- Gunning, Thomas G. 6 results
- Hurwitz, Al 6 results
- Jacobson, Willard J. 6 results
- Jarolimek, John 6 results
- Lott, Johnny W. 1944- 6 results
- Michaelis, John Udell 1912- 6 results
- Reys, Robert E. 6 results
- School Mathematics Study Group 6 results
- Suydam, Marilyn N. 6 results
- Wachowiak, Frank 6 results
- Barber, Jacqueline 5 results
- Butts, David P. 5 results
- Clements, Robert D. 5 results
- Dicsen, Josephine V. 5 results
- Graber, Kim C. 5 results more...