- Geometry
- Area of Circles
- Area of a Circle - Wedge/Sector Demonstration
- Constructions Workpage
- Rotational and Reflection Symmetry
- Snail's Trail
- Equilateral Triangle Construction
- Square Pyramid: Underlying Anatomy
- Proof Without Words
- Angle Bisection
- Transformation Practice
- Latitude and Longitude
- Latitude & Longitude Explorer
- Area of a Circle
- Circle Area (by Peeling)
- Circumference = ? (Animation)
- Circumference = ? (Animation II)
- Area of a Circle II
- Poorly Drawn Quadrilaterals
