Students in secondary education often suffer from public speaking stress, but formal education does not provide any means to support the battle with this anxiety. This study aims at decreasing public speaking stress and increasing public speaking competence via an innovative intervention program that is rooted in the principles of…

To improve the teaching and learning materials for a curriculum it is important to incorporate the findings from educational research. In light of this, we present creative exercises and experiments to elicit, confront and resolve misconceptions in geometrical optics. Since ray diagrams can be both the cause and the solution for many…