Experiment plays many roles in science. One of its important roles is to test theories and provide the basis for scientific knowledge. It can also call for a new theory, either by showing that an accepted theory is incorrect or by exhibiting a new phenomenon that needs explanation. The results of the experiments suggested in the chapter of the EVS book must not be given since students must observe and derive inferences becausestudents look at the results even before they complete the experiment and the natural way of the experiment may spoil.students may lose the curiosity to experiment meaningful learning takes place if students observe and derive inferences after the experiment.students may fake the results they got in their experiment after seeing the correct results.this does not develop a discovery and inquiry nature in the students.?Hence The results of the experiments suggested in the chapter of the EVS book must not be given since students must observe and derive inferences.