(updated in 20.08.2020)
Including all the subjects conceived for this site is an ongoing project that will take quite some time to accomplish, so I will detail below those which I consider to be complete (although any of them may be prone to changing):
modelling:
- the convex regular polyhedra (4 tutorials)
expanding | the edges of polyhedra:
- snubbing the cube onto the cuboctahedron (1 video)
tessellating:
- in 3D (1 video)
exploring | theorems:
- Napoleon’s theorem (3 dynamic and step-by-step applets)
exploring | plane curves:
exploring | plane polygons:
- triangles (8 step-by-step constructions)
- quadrangles (7 step-by-step constructions)
- regular pentagon (5 step-by-step constructions)
- regular hexagon (4 step-by-step constructions)
- regular octagon (3 step-by-step constructions)
- regular decagon (2 step-by-step constructions)
I will include more links as soon as I finish them. Thank you for your understanding, and for your interest.