1. Seminar on the Secondary Mathematics Curriculum at Key Stage 4 CHIANG Kin-nam February 2004

2. Loci and Equations  Comparison between Old and New syllabi in treating this topic

3. Syllabus for Mathematics (Forms I-V) CDC 1985  Content 1. Establishing the concept of locus 2. Construction of loci within a plane 3. Equation of a circle 4. Intersection of a straight line and a circle

4. Syllabuses For Secondary Schools Mathematics Secondary 1-5  Content 1. Qualitative Treatment of Locus 2. Coordinate Treatment of Simple Locus Problems (Straight lines and Circles)

5. Teaching Emphasis  CDC 1985  Teachers are advised to use practical ways in helping students to establish the concept of locus. This is mentioned in the notes on teaching.  Construction of loci  As a basis for studying simple conics

6. Teaching Emphasis Mathematics Sec. 1-5 (1999)  Intuitive understanding of loci through exploring, sketching, visualizing and describing in words the locus of points moving under a condition or conditions  Formally describe loci with equations by using the idea of slope and distance between two points. ( Coordinate treatment )

7. Teaching Strategies  Provide students with plenty of examples to work on. Students find out that the path traced out by a moving point could be a straight line, a circle etc.,  Cooperative Learning Strategy  Use of IT provides a dynamic and interactive way for students in learning this topic.

8. Some suggestions  I I  II II