This paper presents a case study of an experienced and competent mathematics teacher's classroom instructional practice in a Normal Technical Mathematics course. The topic that was observed was Volume and Surface Area of a Pyramid, a subtopic within the mensuration topic in Secondary Two syllabus. The teacher used a video clip on the Egyptian Pyramids to integrate students' prior knowledge on pyramids, which raised their attention on the topic. This was followed by engaging the students in hands-on activity to understand the formulae. [This paper is the second in a symposium of four papers. For the first paper, "Models of Mathematics Teaching Practice in Singapore Secondary Schools," see ED616186. For the third paper, "Imbuement of Desired Attitudes by Experienced and Competent Singapore Secondary Mathematics Teachers," see ED616187. For the fourth paper, "Singapore Mathematics Teachers' Design of Instructional Materials," see ED616188.]