Curriculum statements and textbooks are considered to be vital support tools for teachers, particularly during times of curriculum innovation. A recent change in South Africa was the controversial inclusion of evolution in the school curriculum, raising serious concerns amongst biology teachers regarding the adequacy of their content and pedagogical content knowledge for teaching the topic. Widespread 'misconceptions' about evolution make teaching this topic difficult for biology teachers worldwide. Identifying the sources of errors is an essential step needed before addressing them. This study explored curriculum support materials as a possible source of misconceptions, using content analysis of the South African school Natural Sciences curriculum statement and six Grade 7-9 Natural Sciences textbooks from two different publishers, and investigated 'curriculum slippages' between the 'formal' and 'perceived' curricula. The aim was to determine the nature and extent of unscientific ideas about evolution, and 217
Sanders and MakotsaCurriculum materials as a source of misconceptions to see how authors dealt with potential misconceptions. Errors were found in the curriculum statement and in the textbooks, where they escalated in frequency. Latent problems associated with ambiguous wording of statements posed further problems. Although this paper uses evolution as an example, lessons learned about curriculum materials as a possible influence on misconceptions are applicable to other subjects.Keywords: curriculum support materials, textbooks, misconceptions, curriculum slippages, evolution, natural selectionIn times of curriculum innovation textbooks become important props for teachers, particularly if they are inadequately prepared to implement new curriculum content. However, an important assumption is that such support materials will be scientifically accurate. If they contain errors, teachers with poor content knowledge may not be in a position to recognise mistakes, which are thus likely to be transmitted to pupils. This paper focuses on an investigation of curriculum statements and textbooks as a possible source of misconceptions, as well as how the textbooks identified and addressed common misconceptions. We have used the umbrella term 'misconceptions' for this paper in the commonly understood everyday sense, referring to incorrect ideas, as this is how most teachers and the public are likely to understand the term. Because document analysis was used for this study it was not possible to discriminate between ideas which have been mentally constructed by the document authors (the correct technical meaning of 'misconceptions') and 'errors', which have been acquired from some outside source.
THE CONTEXT OF THE STUDYThe inclusion of evolution in the South African school curriculumThe radical revision of the South African school curriculum, progressively implemented by the newly elected government's education department between 1998 and 2008, was characterised by several changes, one of which was a modernisi...