“…The article "Methodology of formation of modeling skills based on a constructive approach (on the example of GeoGebra)" [34] by Marina G. Drushlyak (figure 27), Olena V. Semenikhina, Volodymyr V. Proshkin, Serhii Ya. Kharchenko and Tetyana D. Lukashova highlights further research by the authors, begun in [3,12,19,35,47,48,197]. Author's methodology of forming modeling skills involves 4 steps: Step 1 -the teacher step by step constructs the curve by means of cloud based service GeoGebra; Step 2 -the teacher offers a description-definition of the curve and provides a ready-made algorithm by which students model the curve independently in GeoGebra; Step 3 -the teacher offers an algorithm for constructing a curve model, and students need to characterize the properties of the curve or give its definition based on the results, Step 4 -students are offered definitions of curves that they have to model in GeoGebra).…”