Below is a particle's motion in the xy-plane. The particle is moving according to the parametric (vector) equations that are on my website.
Charged Particle in a Magnetic Field 3D
Particle Motion On Real Line
Garfield's Pythagorean Proof
Area and Perimeter of a Rectangle
[S1] a GeoGebra file created by a pre-service teacher Jane (pseudonym)
Square spiral- Victor Vasarely - Alex D