AUTHOR
Agad, Ma. Lourdes
2
Mondigo, Lolita
2
University of the Philippines Diliman. National Institutes for Science and Mathematics Education Development
2
Ferido, Marlene Baira
1
Mañalac, Teresita R.
1
Ong, Dana M.
1
Philippines. Bureau of Elementary Education. Curriculum Development Division
1
Philippines. Bureau of Elementary Education. Third Elementary Education Project
1
Punzalan, Amelia E.
1
Reyes, Risa L., Soledad A.
1
Romerosa, Peter G.
1
Santiago, Eugenia C. 1932-
1
Ulep, Soledad A.
1
University of the Philippines (Diliman). National Institute for Science and Mathematics Education Development
1