The impact of computer simulations on Grade 11 lrarners conceptual understanding of photosynthesis

Abstract

Conceptual understanding is fundamental in Life Sciences. Computer Simulations (CS) can be used to improve conceptual understanding. This study investigated the use of CS to enhance the conceptual knowledge of Grade 11 learners in photosynthesis compared to the traditional teaching method. The study used the Multimedia Learning Theory (MLT) as its theoretical model and the constructivist approach in MLT. The research paradigm used is positivism since it relies mainly on experimentation. A quantitative research design was used. The study used a quasi-experimental design to observe the relationship between the dependent and independent variables. The population was made up of secondary schools under Elim and Hlanganani Circuits. A purposive sampling procedure was used to sample participants. The sample was drawn from the grade 11 learners from four different schools under the two Circuits. Data was collected through tests and questionnaires. Validity and reliability were applied to ensure the quality and accuracy of research instruments. Data was analyzed and interpreted using the Statistical Package for the Social Sciences (SPSS) version 29 software. The study investigated the effectiveness of CS in improving the conceptual understanding of grade 11 learners in photosynthesis. The quasi-experimental design involved a sample of 200 learners, 100 as the experimental and 100 as the control group. A pre-test was administered to all learners to assess their prior knowledge of photosynthesis. Thereafter, the experimental group was exposed to CS, while the control group used the traditional teaching method. Both groups were given the post-test to assess their understanding of photosynthesis. A questionnaire was also administered to gather the learner's views on simulations. The result displayed an important improvement in learners' understanding of photosynthesis after using CS and decreased misconceptions. The findings of this study were that CS can be used as a valuable tool in teaching and learning photosynthesis and deliver ideas for the application and design of a simulation-based learning environment.