Enhancing High School Chemistry Students’ Conceptual Understanding of Hybridisation Using Multimedia Instructional Strategies
Multimedia instructional strategies (MIS) have been shown to significantly enhance learners’ academic performance in mastering challenging chemi.
Abstract:
Multimedia instructional strategies (MIS) have been shown to significantly enhance learners’ academic performance in mastering challenging chemistry concepts. However, few studies have specifically investigated using MIS to enhance students’ conceptual understanding of molecular hybridisation. This study employed a nonequivalent two-group pre-test/post-test quasi-experimental design to determine the impact of MIS on students’ conceptual understanding of hybridisation. Data were collected from 60 second-year senior high school students using a diagnostic test and an interview guide. Pre-tests and post-tests were administered to two intact classes of 30 students each: one served as the experimental group and the other, the control group, purposively sampled from two different schools. The results revealed that students in the experimental group (taught using MIS) achieved significantly higher post-test scores than those in the control group (taught using conventional methods). Additionally, the experimental group exhibited a significant improvement from pre-test to post-test scores, whereas the control group’s pre-test and post-test scores did not differ significantly. Moreover, MIS was highly interactive, promoted student interest, and enhanced students’ understanding of hybridisation. Therefore, the study recommends that science educators incorporate MIS into their instruction to improve students’ conceptual understanding of other abstract chemistry concepts. The implications of these findings are discussed in detail, highlighting the potential of MIS in chemistry education.
Keywords: Hybridisation, multimedia instructional strategies, pre-test, post-test.
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