- Mirror a point, line, angle, character over a selected line over a point The most difficult topics regardingGeometric concepts in teaching online were: - Triangle and Other polygons - Circle and Rectangle / square. About theFunctions, Slovenian teachers believe that the hardest topics were: - Definition of the linear function y = kx + n and draw it - Compose table and draw a graph variables Finally, inPercentage(account and direct and inverse ratio) the hardest topics were Graphically display P%, Calculation with p% and Solve real life problems. Target group: STUDENTS For pupils, the most difficult maths subjects in learning online were the same of the teachers: ● Transformation ● Geometric concepts ● Functions ● Percentage Transformation continues to be a hard topic also in learning online, especially with regard to: - Transformations (mirroring displacement, rotation) and their properties - Mirror a point, line, angle, character over a selected line over a point - Concept of line bisectors and angle bisectors and solve construction problems The most difficult topics inGeometric concepts to learn online for the students correspond to the teachers' ones and were: - Triangle and Other polygons - Circle and Rectangle / square 10

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