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Pins and string
Author:
Malin Christersson
To answer a Tumblr question: Curve drawn by using three pins and a string. The curve is piecewise defined by six elliptical arcs. Move the dots to see another shape!
GeoGebra
New Resources
Cross Product in 2D and 3D
Rose Curve - A Classical Construction
Parallel or Not? (V2)
Supplementary Angles
Stairs (Optical Illusion)
Discover Resources
Perspektiv
UnitCir
Surface Area Class Work
Involute of a Circle
Graphing functions with automatic scaling
Discover Topics
Tangent Function
Plane Figures or Shapes
Geometry
Correlation
Scatter Plot