Sandro Zacher, Birte Berger-Höger, Julia Lühnen, Anke Steckelberg
Development and Piloting of a Web-Based Tool to Teach Relative and Absolute Risk Reductions
International journal of environmental research and public health
study uses national probability sample 1027 mathematics science teachers provide first largescale empirical comparison effects different characteristics professional development teachers learning results based ordinary least squares regression indicate three core features professional development activities significant positive effects teachers selfreported increases knowledge skills changes classroom practice focus content knowledge b opportunities active learning c coherence learning activities primarily core features following structural features significantly affect teacher learning form activity eg workshop vs study group b collective participation teachers school grade subject c duration activity