Dahncke, H. et al. (1972): A hierarchy of concepts and principles, some types of learning and some results concerning the concept of energy for 5th graders in the IPN Curriculum Physik

Dahncke, H., Duit, R. & Niedderer, H. (1972). A hierarchy of concepts and principles, some types of learning and some results concerning the concept of energy for 5th graders in the IPN Curriculum Physik. In IPN-Symposium: Kognitive Lernprozesse und naturwissenschaftlicher Unterricht Kiel: IPN.@inproceedings{niedderer1972a, title={A hierarchy of concepts and principles, some types of learning and some results concerning the concept of energy for 5th graders in the IPN Curriculum Physik}, author={Dahncke, H. and Reinders Duit and Hans Niedderer}, year={1972}, booktitle={IPN-Symposium: Kognitive Lernprozesse und naturwissenschaftlicher Unterricht}, location={Kiel}, publisher={IPN} } 