- Two Circle Trace
- Spin the Chrome Icon!
- Rotating Ellipses
- Rotating Ellipses with Arcs
- Basic Derivatives
- Area Under Sine (draggable)
- Epic Circle Trace
- Circles, Tangents, and Heptagon Diagonals
- Circles, Tangents and Nonagon Diagonals
- Crop Circles
- Hendecagon Diagonals, Circles and Tangents
- Basic Unit Circle
- Tridecagon Diagonals, Circles and Tangents (BIG)
- Tridecagon Diagonals, Circles and Tangents
- Simple Similar Triangles
- Geometric Top View Model of the Twisted Savonius Wind Turbine (Interactive)
- Cyclic Quadrilateral Theorem
- Chord Angle Theorem
- The Three Primary Types of Wind Turbine, Animated as if in Operation (High-Quality – Slow-loading)
- The Three Primary Types of Wind Turbine, Animated as if in Operation (small)
- Twisted Savonius Wind Turbine Full Geometric Model (without traces/surfaces)
- Squeezing Twisted Savonius Wind Turbine Model
- Vector Combinations and Span
- Demo
- Circle Radius and Proportional Position Puzzler
- Polar Proportional Point and Circle Puzzler
- Polar Proportional Point and Circle Puzzler 2
- Polar Proportional Point and Circle Puzzler 3
- Epic Circle Trace 2
- Epic Circle Trace 3
- Polar Rose: Mathematical Flower
- Pythagorean Theorem Calculator