Search Results       Your search for [author]De Leon, Lorenzo Padua, 1918- returned 1 record.           The effect of grouping on achievement, classroom participation and interaction of students in modern geometry at the Manuel L. Quezon (Public) High School, Manila. by De Leon, Lorenzo Padua, 1918-; Quezon City: [s.n.], 1972. Subject: Ability groupings in education; Group work in education.          Add to Book Cart Relevance: 37.93%