Using GeoGebra to Cater for Learning Needs Identified in
Territory-wide System Assessment

Anthony C. M. Or

Education Bureau, Government of the Hong Kong SAR

Abstract for Presentation

Since its implementation in 2004 in Hong Kong, the Territory-wide System Assessment reveals the learning needs of students in various topics in primary and junior secondary Mathematics. This presentation explores the potential of GeoGebra in designing instructional resources catering for the learning needs identified in the assessments. I am going to present the following exemplars of instructional designs in our “Web-based Learning and Teaching Support” resources using GeoGebra. In particular, I shall present how the distinctive features of GeoGebra, such as tracing, conditional showing and dynamic colouring, could be used in the instructional designs to support visualization as well as reasoning at primary and junior secondary levels.

1. Classification of quadrilaterals

2. Drawing rhombus on the grid

3. Finding the area of a circle

4. Visualizing the points satisfying a linear equation in two unknowns

5. Circumcircle of Triangle

6. SSA

Problem: How can you construct an equilateral triangle with the 3 vertices lying on 3 parallel lines?