An investigation into how Grade 8 Natural Sciences learners make sense of chemical reactions during lessons involving familiar resources: a case study

Abstract

My experience of working with science learners for the past 25 years and witnessing their difficulty in comprehending chemical reactions motivated me to investigate how learners make sense of chemical reactions in lessons involving the use of familiar resources. Essentially, this study sought to gain insights into whether engaging learners during practical activities using familiar resources facilitated meaning-making of chemical reactions. There is not much literature on early high school learning of concepts linked to chemical reactions which opened the way for this research. This study was conducted at a public high school comprised of Grades 8-12 (FET band) in Grahamstown in the Eastern Cape, South Africa. It is located within the interpretive paradigm. Within this paradigm, both quantitative and qualitative methods were conducted with a Grade 8 Natural Sciences class. Data sets were analysed in relation to the research questions. A variety of data gathering techniques were used, namely diagnostic and summative tests, worksheets and a semistructured interview with a focus group. Both inductive and deductive processes were applied during the data analysis process. The validation process was done through data analysis using mixed methods (quantitative and qualitative), checking transcriptions with the focus group and the use of a research participant. Learners in the focus group verified their responses, checking for any misrepresentations. The main finding of this study is that the use of practical activities, using familiar resources, facilitated learner engagement and meaningful learning. However, this study further revealed that some concepts associated with chemical reactions were challenging to learners. Similarly, that some prior everyday knowledge and experiences that learners bring to the science classroom impede sense-making in Natural Sciences. In addition, the language of learning and teaching (LoLT) and the language of science are other factors impeding sense-making of scientific concepts. It is thus recommended that teachers plan well in order to incorporate the use of practical activities using familiar resources during mediation of learning.