Items by "Nainggolan, Donni"

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Nainggolan, Donni (2023) Development of Learning Device with a Creative Problem Solving Model Helped Use GeoGebra Software to Enhance Students Ability to Solve Mathematical Problems. In: Proceedings of the 4th International Conference on Science and Technology Applications, ICoSTA 2022, 1-2 November 2022, Medan, North Sumatera Province, Indonesia.

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