%0 Journal Article %T Usage og the system of interactive geometry Geogebra for work with graphs %A Sitnikova, T.V. %A Maleva, A.. %K graph, GeoGebra, dynamic program %J Actual directions of scientific researches of the XXI century: theory and practice %D 2014 %N 2 %P 3 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov