Semenikhina, O.V. and Drushliak, M.H. 2014. GEOGEBRA 5.0 TOOLS AND THEIR USE IN SOLVING SOLID GEOMETRY PROBLEMS. Information Technologies and Learning Tools. 44, 6 (Dec. 2014), 124–133. DOI:https://doi.org/10.33407/itlt.v44i6.1138.