Columbia subject headings:
Harvard subject headings:
Activity programs in education--Case studies.
Mathematics--Study and teaching (Elementary)--Case studies.
Social sciences--Study and teaching (Elementary)--Case studies.
Teaching--Case studies
Princeton subject headings:
Activity programs in education--Case studies.
Case studies.
Mathematics--Study and teaching (Elementary)--Case studies.
Social sciences--Study and teaching (Elementary)--Case studies.
Teaching--Case studies.