Concept map as an effective tool allows learners to deal with an in depth analysis rather than keeping more information which is transferred through lecture based teaching. Concept map also improves the efficiency of computer assisted simulation techniques in learning environments. This research especially focuses on effectiveness of a computer simulated environment and concept mapping and its effect on conceptual understanding of science. In this study, we selected 60 high school students and divided them into two groups (30 students in Group A and 30 students in Group B). The goal of this research is to investigate how the concept maps influence the learning of Direct Current (DC) concept in electric circuits. We collected data by using Determining and Interpreting Resistive Electric Circuit Concepts Test (DIRECT). Covariance analysis indicates significant difference between two groups. Adjusted pretest scores also approve the significant effect of learning with simulation plus concept map in comparison with the sole simulation among learners (Partial eta Squared = 0.08; F = 4.84; p < 0.03). We conclude that students who used simulation along with a concept map (group B) showed better learning than students who used only a simulation software.