ABSTRACT The study applied item response theory in the development and validation of multiple -choice test in Economics. Instrumentation research design was used for the study. A sample of 1005 …
EFFECTS OF INSTRUCTIONAL MATERIALS ON ACHIEVEMENT AND RETENTION OF BIOLOGY CONCEPTS AMONG SECONDARY SCHOOL STUDENTS
ABSTRACT This study investigated eects of instructional materials on the academic achievement and retention of SS 2 biology students in Delta State. The study sample consisted of 86 SS2 biology …