Influence of Van Hiele's Model on the Development of Mathematical Thinking in Longitude and Latitude among Secondary School Students in Sokoto State, Nigeria

This research aims at examining students' mathematical thinking ability. In order to achieve these objectives two research questions with their equivalence null hypotheses were generated to guide the study. A quasi-experimental design entailing pretest and posttest was employed. A sample of 267 (155 Male and 112 Female) students were selected using simple random sampling techniques through balloting method out of 28,897students during 2022/203 session. Mathematical Thinking Ability Test (MTAT) was the instrument used for data collection. The validity of the instrument was established by four experts and a pilot study was carried out. The result of the pilot study through test re-test approach Using PPMC statistical tool indicated a reliability index of 0.72. Independent sample t-test was used to analyze the two null hypotheses. The result of the first null hypothesis indicated a significant difference between the two groups in favor of the EG. Moreover, the second null hypothesis shows no significant difference in gender. It was recommended that Van Hiele's instructional model should be incorporated in the curriculum as model of teaching longitude and latitude.