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This paper presents a study of the impact of using Java Software of Geometrical Optics JSGO on the geometrical construction success of the virtual image among the first year university students, option: Sciences of Physical Matter SPMThe experimentation realized was conducted towards the end of the university year 2013/2014 among two groups of learners consisting each of them of 59 students: a witness group and another experimental. The witness group must to use only the traditional method, paper, pencil, ruler and protractor, for doing tests; while the experimental group should construct the virtual image using only the mentioned software.We have scored that using JSGO has no significant influence on the success of the geometrical construction of the virtual image associated with the first variant sub-tests. However, using this tool through the second variant sub-tests leads to a number of correct constructions which is higher than that noticed when using traditional method.By analyzing the results concerning “students’ conceptual difficulties” we have scored the presence of the conceptual difficulty associated with an incorrect status that about 32 % of witness group students attribute to the construction ray extension. The use of JSGO provides a useful tool to overcome this conceptual difficulty. This analysis also indicates that, despite the interactive character of JSGO, about 9 % of experimental group students still face the conceptual difficulty related to the correspondence image object (punctual and global) and also to the conceptual difficulty related to the minimum number of rays departing from the same point of the luminous object.Finally, the study of “students’ perceptions about using JSGO” showed that the participants are very satisfied with using this computer wizard.

Impact of Using Java Software of Geometrical Optics JSGO on the Construction Success of the Virtual Image among the First Year University Students