<![CDATA[This study aims to explain the variety of mathematical processes used by students in solving open-ended problems using the popular context of TikTok, specifically in calculating the size of slices of Ci Mehong layer cake. This study uses a descriptive qualitative paradigm through tests and diagnostic interviews as data collection techniques. A total of 32 student worksheets were analyzed using a combination of thematic analysis and the flow model, based on mathematical modelling indicators. The findings reveal various forms of numerical, graphical, algebraic, and verbal representations in the real situation (real world model) stage. In the real world model stage, students demonstrated the use of multiple mathematical concepts, including cuboid, geometric sequences, exponents, and basic arithmetic calculations. Meanwhile, in the mathematical model (mathematical result process), students produced the dimensions of the cake after cutting, expressed in both volume and length units, which were then reflected back to the real situation by making assumptions about the number of slices each individual would receive. The open-ended mathematical task in this study effectively generated a wide variety of students’ mathematical processes.]]>
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