Teaching science concepts for conceptual understanding has its challenges. Bringing about conceptual change in the science classroom can be difficult because most concepts are complicated and often counter-intuitive in the teaching and learning of science concepts. A review of the literature indicates that the conceptual change model, CCM can be an effective teaching technique in addressing misconceptions and improving conceptual understanding when it comes to science instruction. The aim of this research was to find out the effect of the conceptual change model on pre-service teachers' conceptual understanding regarding the topic of forces and motion. Using data from tests and questionnaires, the research questions were answered by quantitatively analyzing the collected data. The analysis revealed that there is a statistically significant correlation between the conceptual change model and the conceptual understanding of the pre-service teacher participants. Overall, the results provide evidence in support of the effectiveness of the conceptual change model, CCM in addressing misconceptions and promoting conceptual understanding of forces and motion among the pre-service teacher participants that volunteered for this research. The results also indicate that the CCM is a teaching model which must be considered by science educators and teachers as they seek to address issues related to misconceptions and conceptual understanding in the teaching of science topics.