(a) 為中學提供有關數學教育校本課程發展的到校支援服務，以協助推行各項課程措施，例如照顧學習多樣性，推行科學、科技、工程及數學教育(STEM教育) ； (b) 發展有效的教與學, 評估策略及(促進)學生學習成效的課程資源； (c) 發展和提升學校課程領導的專業能力，並舉辦專業發展活動，以促進校本課程發展； (d) 推廣學校在校本課程發展及支援服務方面的良好做法； (e) 協助學校把學生學習的顯證轉化成概念，以獲取在校本課程的策劃、教學、學習和評估方面的實際情境知識；以及 (f) 協助處理組內的行政工作，以確保該組運作暢順。

(a) To render on-site support services in secondary schools for school-based curriculum development in Mathematics Education Key Learning Area, measures for catering for Learner Diversity and other curriculum initiatives, such as Science, Technology, Engineering and Mathematics Education; (b) To develop effective teaching and learning, assessment strategies as well as curriculum resources in enhancing student learning; (c) To develop and enhance the professional capacities of curriculum leaders; and to organize professional development activities to facilitate school-based curriculum development; (d) To disseminate good practices of schools in school-based curriculum development and support services; (e) To facilitate conceptualization of evidence-informed practices to generate contextual knowledge in school-based curriculum planning, teaching, learning and assessment; and (f) To assist in the administration and operation of the Section.