Qualitative research.

Qualitative analysis : = practice and innovation / by: (Language materials, printed)

Handbook of qualitative research in education / by: (Language materials, printed)

Qualitative research design : = an interactive approach / by: (Language materials, printed)

Geometrische Denkweisen beim Lösen von PISA-Aufgaben : = Triangulation quantitativer und qualitativer Zugänge / by: (Language materials, printed)

Research- Methodology.

Programme for International Student Assessment.

Geometry.

Education- Research

Qualitative Research.

Quantitative research.

Qualitative research.

Social sciences- Research

Research Design.