Experimental problem task for ninth-graders at physics competition 2019: task and results analysis

V diplomskem delu bomo predstavili in raziskali eksperimentalno nalogo z 39. tekmovanja v znanju fizike za zlato Stefanovo priznanje, ki so jo reševali učenci 9. razredov na državnem tekmovanju v šolskem letu 2018/2019. V prvem delu bomo predstavili tekmovanje iz znanja fizike, podrobneje si bomo ogledali državno tekmovanje, ki je potekalo 6. aprila 2019. Sledi predstavitev in analiza naloge ter v nadaljevanju še analiza najpogostejših napak, ki so jih pri reševanju naloge naredili tekmovalci. Poskusili bomo poiskati vzroke za (najpogostejše) napake. Vse tekmovalne pole bom še enkrat pregledal in ponovno ocenil, da ugotovimo zanesljivost med ocenjevalci in če so navodila za vrednotenje naloge zagotavljala objektivno ocenjevanje.In my graduation thesis we will investigate experimental task from the 39th National Competition in Physics for Stefan awards, which was held on April 6th 2019 and which was given to pupils of 9th grade. In the first part we will get a good look at history of physics competitions in Slovenia. We will also present this year\u27s State competition. In the second part of the thesis we will present and analyse the experimental problem and examine the answers of the pupils, to find out what common errors they made. We will try to find out what caused those errors. In the last part I will grade experimental task and compare my own results with official results to check reliability of graders and if instructions for graders provided objectivity of grading