As a result, mathematics teachers are prompted to focus on the heutagogical approach. However, challenges arise, like inadequate training and support among mathematics teachers. Thus, this study concentrated on formulating a series of teaching activities aligned with the heutagogical approach, specifically tailored to assist mathematics teachers in enhancing their teaching methods. This study was conducted using the Fuzzy Delphi Method (FDM) involving 15 experts with various fields of expertise such as mathematics education, educational technology, heutagogy, pedagogy and the curriculum as well as primary and secondary school mathematics teachers. The data was collected from October 2023 to November 2023 by using a questionnaire as the primary means of collecting data. Findings were analysed using triangular fuzzy number, threshold value, percentage for expert consensus and defuzzification process to determine the acceptance and ranking for each teaching activity. The results indicate that teachers assign projects that require students to explore real-world applications of mathematical concepts, were ranked first, followed by other activities, while teachers arrange virtual sessions with guest speakers from the mathematics field to provide insights to real-world applications were ranked last. In conclusion, this study offers valuable insights for mathematics teachers interested in enhancing student-centered learning within the framework of Education 4.0.