The main stages of student work are the analysis of the influence of different factors on the result and the choice of an optimal variant of the analytical method. Described approach provides the high rate and level of assimilation of the methods by students. Also it improves the understanding of object biological peculiarities and of object relationships with an environment. Every student, performing the certain research work, is connected with the actual problems of the region, so three basic tasks can be solved during the practice: the educational, research and the social ones.