International Journal of Academic and Applied Research (IJAAR)   Year: 2023 | Volume: 7 | Issue: 5 | Page No.: 54-58 Effects of Laboratory and Inquiry Methods on Students' Mathematics Achievement in Senior Secondary Schools in Delta North Senatorial District Download PDF OKOISAMA, Chukwuekwu Marian and Dr. S. B. Ijeh Abstract: The study investigated the effects of laboratory and inquiry methods on students' Mathematics academic achievement in senior secondary schools in Delta North Senatorial District. The research design was a 3x2 factorial, pretest, posttest planned variation design. 5813 SSII students made up the population. 319 SSII Mathematics students sampled with stratified random sampling technique took part in the study. MAT was used to collect data. MAT's r-value, which was calculated using Kuder-Richardson Formula 21, was 0.78. The findings revealed a significant difference in the mean achievement scores among students who were taught mathematics using laboratory, inquiry, and lecture methods, with the laboratory and inquiry methods coming out on top. The results also revealed a significant interaction between the teaching method and sex on students' achievement in mathematics. The study came to the conclusion that, in terms of raising students' mathematics achievement, laboratory and inquiry methods are superior to the lecture method. The study recommends that secondary school mathematics teachers should use laboratory and inquiry methods in their lessons, and that school administrators should offer these teachers in-service training to give them the necessary skills to ensure the successful implementation of laboratory and inquiry methods as well as other cutting-edge techniques.