| RESEARCH | |
| Main activities | |
| Using computers in mathematics lessons / Dynamic geometry | |
| Teaching and learning with new media / Designing multimedia learning environments | |
| Researchreports (in German) | |
| Researchreport 1998-2002 | Download the researchreport here! |
| Researchreport 2003-2005 | Download the researchreport here! |
| Researchreport 2006-2011 | Download the researchreport here! |
| Researchreport 2012-2025 | Download the researchreport here! |