It could be seen from above that the content of the course includes more than what was outlined in the syllabus document (Singapore Ministry of Education, 2001). Ball (1991) mentioned that in order to teach mathematics, being able to solve the problem is insufficient. As she puts it, “tacit knowledge, whatever its role in independent mathematical activity, is inadequate for teaching” (Ball, 1991). This is taken into consideration in designing the above in-service course.