The main objective of the present study is to find out the effectiveness of teaching biology through the Prezi visualization tool. An experimental research design was adopted in this study. The population and sample are IX standard students’ E.D. Thomas higher secondary, Kudigadu, Papanasam (T.K), Thanjavur district. This group is also called the experimental group. The result shows that there is a significant difference between the experimental group's pre-test and post-test mean scores of achievements in biology. It is concluded that the Prezi visualization tool may change the teaching-learning process. This tool is very effective in teaching biology.

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Keywords: Prezi Visualization Tools, Achievement, Biology, Secondary Level.