SUBJECT
Handbooks, manuals, etc
Study and teaching (Elementary)
Science
3
Thought and thinking
3
Activity programs in education
2
Art
2
Mathematics
2
Study and teaching (Secondary)
2
Artists' studios
1
Creative activities and seat work
1
Hanbooks, manuals, etc
1
Interdisciplinary approach in education
1
Language arts (Elementary)
1
Reasoning
1
Study and teaching
1