The main purpose of the study was to determine the Effects of demonstration and Projection methods in students? achievement and interest in some graph related concepts in Economics. The problem that necessitated the study is students? low achievement in Economics as reported by research. The review of literature was carried out under three broad headings namely conceptual framework, theoretical framework and empirical studies. The study adopted quasi-experimental design -a non-equivalent control group design. The population of the study comprised of all SS II students in Ikeduru local Government area in Imo state.
The researcher sampled two intact classes out of which one was taught using demonstration teaching method while the other class was taught using Projection method. Two instruments were used for data collection namely; Economics Achievement test (EAT) and Economics graph interest scale (EGIS) and were developed by the researcher. EAT was subjected to face and content validation by One person from Department of Social Science Education, University of Nigeria Nsukka, two persons from Department of Economics Education, AlvanIkoku Federal college of Education Owerri. Three Measurement and Evaluation experts in Department of Science Education, university of Nigeria, Nsukka validated the Economics