ABSTRACT The result of improvised instructional materials on students’ performance longitude and latitude at the senior technical colleges was assessed. Two hundred students of all senior technical colleges participated in the study. The students were grouped into two:- control group and experimental group (20 students formed each group “control and experimental”) preset was administered to both groups. Alter exposing the experimental group to treatment, post-test was administered. Mean and standard deviation was computed; ranked are used to answer the research question for the study. The t-test statistics was used in testing the null hypothesis formulated. The finding of this study shows that the group taught with improvised instructional materials performed better than the group taught without any instructional materials. Recommendations were offered on ways to promoting, encouraging and arousing the interest of teachers in the improvisation of mathematics equipment and materials.

INTRODUCTION For the purpose of definition, technical colleges are a post-secondary vocational training programme whose major purpose is the production of technicians and craftsmen. It is a special grade of vocational education which can be distinguished from other educational programmes because more mathematics and science are required in the training programme Okorie (2000) Today the population of Technical colleges has continue to decrease in the country, equally there had been an enormous decrease in the students population. This is due to the unimpressive state of the nation’s economy, the government has found it very difficulty to adequately finance technical colleges and also provide the scientific equipment required by these colleges. Therefore many technical colleges in the country operate without standard mathematics and science laboratories. Obviously the situation is not likely to improve in the nearest future judging from political and economic state of the nation, due to inadequate funding of the schools and colleges in the country. Consequently, the demand for mathematics and science equipment will continue to remain by these schools and colleges and the most feasible way to adjust with this demand is to resort to the improvisation of teaching equipment and materials. In Nigeria and other foreign countries, a lot of research work on improvisation of teaching of mathematics and science subjects had been carried out as part of the effort to promote, encourage and arouse the interest of mathematics and science teachers, educators and curriculum developers in improvisation of teaching equipment and materials. Alghomlan (1990) explain why mathematics teacher should improvise with available materials in other to achieve their aims in teaching. Therefore instructional materials help the teacher to meet individual differences of learners in class by using aid that appeal to different sense (Moronfola, 1983) Aina (2013), stressed that instructional materials are to supplement verbal explanation of concepts or any description so that the learning could be real to the student, therefore the national policy on Education (2004) emphasizes the teaching and learning of science principles, it also stated that the provision and use of science will lay a sound bases for scientific and reflective thinking among pupils. Ugoata (2006); Nwagbo (2008), asserted that teaching equipments and materials are often lacking in our schools. However, some of the equipments needed for teaching mathematics in technical colleges can be improvise to arose the interest of the students. Abimbola (1999), stressed that the primary purpose of instructional materials is to make learning more effective, and also facilitate it. Provision and use of instructional materials for mathematics teaching will lay a sound basis for scientific and reflective thinking among technical students. Studies have shown that the students enjoyed or gain more when improvised materials were used for teaching physics (Aina 2013).this was also supported by Eyetsemitan (2000) and Achimigu (2006) that the use of instructional materials improve achievement in basic science. METHODOLOGY An experimental design was used for this study, in which quasi-experimental approach was used. There was an experimental group and a control group. The experimental group was exposed to improvised materials. Their performances were later compared using the mean scores in pre-test and post test scores. Senior students of all the five Technical colleges in Kwara State were used for this study A total of 200 students comprising of 155 males and 45 females constitute the entire population which was considered appropriate and manageable by the researcher. These students were divided in to two groups. One group was experimental (20) and other group was for control (20) Two groups (A & B) of senior students from all the five technical colleges in the state were taught mathematics lesson on the determination of distance between two points on the earth surface along the lines of latitude. The duration was 45minites each. Each group comprised of twenty (20) students. Group A was taught with improvised instructional materials, while group B, was taught without using improvised materials. At the end of the lesson, group A and B were given a written test, their script were collected and marked, and the scores were later analyzed.