- Workshop: Using the 3D Features of GeoGebra
- Workshop: Using 3D Features of GeoGebra
- Two Largest Cubes in a Box
- Methane
- Ethane
- Cyclohexane–Chair conformation
- Cyclohexane – Boat conformation
- Cross-Sections of the Cube
- Rotational Symmetry of the Cube
- Net of a Triangular Prism
- Surface of Revolution
- Largest Cylinder Inscribed in a Cone
- Another Net of Regular Tetrahedron
- HKCEE 1999: Folding an Aeroplane
