International Journal of Academic Pedagogical Research (IJAPR)   Year: 2023 | Volume: 7 | Issue: 1 | Page No.: 81-84 Effects Of Demonstration And Lecture Methods On Secondary School Students' Achievement And Retention In Biology In Delta North Senatorial District Download PDF CHUKWUMA, Ngozi and Dr. E. O. Oyovwi Abstract: The study looked at the effects of demonstration and lecture methods on secondary school students' achievement and retention of Biology in Delta North Senatorial District. The study used a planned variation quasi-experimental approach. 6,453 SSII Biology students made up the study's population. The study used 246 SSII Biology students as its sample. Biology Achievement Test (BAT) was the tool utilised to collect data. Using KR-21, BAT had a reliability value of 0.88. Pre-test, post-test, and delayed tests with BAT were conducted. ANCOVA was used to examine the results. The findings revealed a substantial difference between students taught biology through lectures versus demonstrations in terms of mean accomplishment and retention scores, favouring the latter mode. The study concludes that demonstration method outperformed the lecture method in terms of raising student achievement and retention of biology. In order to teach biology at the secondary school level, it was recommended that teachers employ the demonstration technique.