Victor Travnikov, Y. M. (Peter Wessels) et al. (2003): Pupil Achievement in Mechanics with Different Types of Tasks – a Comparison between St. Petersburg and Bremen (Report). University of St. Petersburg, University of Bremen

Victor Travnikov, Y. M. (Peter Wessels) & Niedderer, H. (2003). Pupil Achievement in Mechanics with Different Types of Tasks - a Comparison between St. Petersburg and Bremen (Report). University of St. Petersburg, University of Bremen. Bremen: Institut für Didaktik der Physik.@booklet{nieddererwessels2003a, title={Pupil Achievement in Mechanics with Different Types of Tasks - a Comparison between St. Petersburg and Bremen (Report). University of St. Petersburg, University of Bremen}, author={Victor Travnikov, Yuri Maksimachev, Peter Wessels and Hans Niedderer}, year={2003}, location={Bremen}, publisher={Institut für Didaktik der Physik}, url={/pubs/Niedderer/2003-VTPWHN.pdf} } 