  In the symposium contributions we discuss research in physics education and
the consequences of its results for physics teaching. The symposium presents
four different aspects of physics teaching and learning, but all of them have
research-based problem analysis in common. The problems analysed cover
different aspects of the physics teaching-learning process. Innovative aspects
such as the effect on learning of the integration of engineering projects in
the science teaching process, the influence on the learning process of
conceptions about science and attitudes, and aspects related to teaching
contents and students' learning difficulties. Its conclusions are not merely
intuitive proposals based on teaching experience, but on a careful planning of
data collection, analysis of results and empirical basis
