The present study explores how in-service secondary education Greek biology teachers understand aspects of the concept of ecosystem under the assumption that the ecosystem is an ill-defined concept. If it is to be considered a holistic entity, the ecosystem acquires its definitional features within the ecological field of systems ecology, which…

This paper reports on an investigation of two inter-related but different matters, one of interest to science education researchers and teachers in general, and the other to those teaching about evolution. The first was motivated by the dilemma facing teachers who want to diagnose learners' prior knowledge before teaching and are concerned about…

How can water and a penny demonstrate the power of mathematics and molecular theory? Do spelling and punctuation really matter to the human brain? The third of Thomas O'Brien's books designed for 5-12 grade science teachers, "Even More Brain-Powered Science" uses the questions above and 11 other inquiry-oriented discrepant events--experiments or…