The study investigated the impact of PhET simulation-based learning on students’ motivation and academic achievement in learning oscillations and waves among Malawian secondary students. The following research questions guided the study: (i) What were students’ motivation and academic achievement levels at the beginning of the study in oscillation and waves? (ii) To what levels do PhET interactive simulation-based learning impact students’ motivation and achievement in oscillations and waves? (iii) Is the change in post-test scores due to the students’ characteristics in non-randomized settings or the PhET interactive simulation-based learning? A sample of 280 (44.6% females) form three secondary school students with a mean age of 17.5 (
SD
= 1.424) from four schools in Blantyre urban district in Malawi was used in a quasi-experimental design of non-equivalent groups. The experimental group was exposed to PhET simulation-based learning, while the conventional teaching methods were used in the control group. Pre- and post-tests were used to collect data on academic achievement, and questionnaires collected data on motivation. Independent samples
t
-test showed a statistical difference between the two groups on post-test of the academic achievement. Results from linear regression indicated that the differences between the two groups in the post-test were not due to students’ characteristics but rather the intervention with
p
<
0.01
. The ANCOVA test on motivation constructs showed a significant difference with a small effect size between the study groups on self-efficacy, active learning strategies, performance goals, achievement goals, learning environment stimulation, and attitudes towards learning with computer learning. The results from the study suggest that PhET simulation-based learning improved the learning of oscillations and waves. PhET simulation-based learning provides visualizations and teaching aids that help easily understand content knowledge, hence improving students’ academic achievement and motivation levels.
Supplementary Information
The online version contains supplementary material available at 10.1007/s10956-022-10010-3.