Book 6.4 Faculty of Natural Science and EducationBook 6.4 · Education - Research and Innovations SAT-2G.307-2-ERI-11 APPLICATION OF THE FIVE-LEVEL MODEL OF TEACHING MATHEMATICS ON THE TOPIC OF BIQUADRATIC EQUATIONS Cite Cite this paper× Citation styleAPA 7IEEEChicago Author–DateHarvardBibTeXRIS DownloadCopy Sedat Mahmud, Anna Lecheva