EFFECTS OF IMPROVISED INSTRUCTIONAL MEDIA ON NIGER STATE SECONDARY SCHOOL STUDENTS’ACHIEVEMENT IN SELECTED BIOLOGY CONCEPTS
ABSTRACT This study investigated the effects of improvised instructional media on secondary school students’ achievement in biology in Niger State. It also investigated gender and ability levels effects on achievement. Two hundred and seventy (270) students were drawn from nine public senior secondary schools. The design adopted was pretest posttest control group factorial design. The treatment involved teaching the experimental group 1 with the use of improvised models, the experimental ...
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