​Dr. Omar Abu-Ghalyoun served as the Head of the team responsible for authoring the Grade 12 Business Mathematics textbook. The authorship process took place from February 25, 2025, to January 10, 2026, under the commission of the National Center for Curriculum Development. During this period, Dr. Abu-Ghalyoun led the team in designing and developing the textbook content, ensuring alignment with the national curriculum standards and integrating practical applications to enhance students’ understanding of business mathematics concepts. His leadership was instrumental in coordinating the contributions of subject experts, reviewing instructional materials, and maintaining the academic quality and pedagogical relevance of the textbook.​