Abstract: Students of Faridabad district .The main findings of the study are: (i) A significant difference has been found between the means scores of post test for the achievement test administered on the control group and experimental group both at 0.05 and 0.01 levels. The difference between the mean scores of the student s of the two groups are quite significant showing the effectiveness of the learning through Concepts Maps over Lecture method and proving that concepts Maps play positive role in enhancement of learning basic concepts of science. (ii) It has been found that the correlation between Maps score and the scores on the maps related to multiple choice items on the unit test varied from 0.04 to 1, which inference that correlations are generally high. The present study was conducted to study the effectiveness of using concept maps in science among VI grade 100