INVESTIGATION FOR THE USE OF INSTRUCTIONAL MATERIALS FOR THE EFFECTIVE TEACHING AND LEARNING OF CHEMISTRY IN NIGERIAN SECONDARY SCHOOLS (A CASE STUDY OF GUSAU METROPOLIS OF ZAMFARA STATE  

2019-10-10
Reliability of the instrument is concerned with the consistency of the measurement. Galadima (2009) defines reliability or a test as the consistency of measurement overtime. Instrument was administered 10 the ...