The research work focused on the effect of improvised instructional materials on senior secondary students’ achievement in biology in Enugu state local Government Area of Enugu state. Three research questions and three hypotheses were raised to guide the study. The study employed a quasi-experimental design. One hundred (100) were used for the study. The instrument for data collection is Biology Achievement Test (BAT). The instrument was face and content validated. The reliability of the instrument using Kuder-Richardson formula-20 (K-R 20) was 0.83. The data collected was analyzed using mean and the hypothesis was tested at 0.05 level of significance using ANCOVA. Findings among others include that students taught with improvised instructional materials performed better than students taught without instructional materials. The researcher recommended among others that teachers should improvise instructional materials. This will give the students enough understanding of biology concepts as the child's local environment will be used as source for the material.
Improvised, instructional material, achievement, biology
