The negative perceptions of the students over physics seem to create a barrier for educating and learning of the matterat secondary school level. As a consequence, it disturbs the educational acquirement of pupils. After using different techniques and putting extensive efforts, teaching Physics is still not able to provoke interest in students which leads to extreme failure for educational success. Aimed to find solution this study tries to identify how Computer Assisted Instruction (CAI) as an innovative strategy can improve attainment rate of students in Anambra, Nigeria. Quasi-experimental design, specifically the non-equivalent control group 2X 2 factorial design has been selected here as statistical analysis. 167 senior secondary one (SS I) students from co-educational schools in Awka South and Dunukofia Local Government Area of Anambra state has been selected as sample through Multistage sampling. Valid and reliable instrument of thirty Questions as MCQ format on Electric Charge and Electric Field ( were used for data collection.Pre-tests were applied on groups before treatments. “Electrostatic” was taught to experimental group using CAI with animation package produced by the researcher which is based on the content of the SS I physics syllabus. Whereas traditional and old style of teaching were applied on control group. One week after the treatments were applied Post-tests were conducted. Analysis of Covariance (ANCOVA) test has been performed with 95% confidence Interval. Outcome reveals that; significant difference exists for scores of mean achievement in experimental and control groups in favour of the experimental group. Significant interaction effect has been noticed by combining treatment and gender in case of pupil achievement in “Electrostatics”. Based on the findings, some recommendations were made.
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