Excessive exposure to solar ultraviolet (UV) radiation causes sunburn and has been consistently associated with increased susceptibility to melanoma and skin ageing. Acknowledging the need to promote healthy sun exposure habits, numerous educational initiatives have been developed to raise public awareness towards this issue. However, studies…

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…

Conducted in urban and rural schools in two provinces of South Africa, the present study reports biology learners' understanding of concepts about genetics and inheritance. Participants were Grade 11 and 12 learners, aged 15-16 years. The tools included a written questionnaire, interviews, pre- and post-paper and pencil tests and focus group…