The study developed constructivist approach experiments to determine its effectiveness in teaching physics concepts. The quasi-experiment following a non-equivalent control group design was used. Two sections of 2nd year BSIT students of Isabela State University-Cauayan Campus were involved. The study administered pre-test and post-test. The scores in the achievement test and standardized attitude inventory test were compared and the significance of their difference was determined using the t-test. The control group and the experimental group were equal in terms of cognitive level in Physics. However, the students exposed to the constructivist approach of laboratory teaching had significantly higher post-test scores and higher mean gain scores than the students exposed to the traditional approach after the study was conducted. The experimental group developed a more positive attitude towards Physics than the control group. Moreover, there was a significant difference between the post achievement scores and post attitude scores of the students exposed to constructivist approach-based experiments and traditional experiments. The Constructivist Approach Experiments are effective in enhancing students’ achievement and in developing a more positive attitude towards the subject than the traditional approach.