Miscellaneous: SketchPad Files
None of these sketches are mine but I have modified most of them after downloading
to add more functionality (for my own purposes). Many thanks again go to their
creators and please let me know if they belong to you!
Notes:
(1). On opening any of these scripts enclosed in the above pages you may not
actually see them! - What you may see instead is a blank Sketch File probably
called "Sketch01.gsp". If you are unfamiliar with SketchPad all that
you need to do is to click on the "Restore" Button in the top right
of the active Sketch file Window Toolbar.
(2). All of these filenames in this page are LONG! - Therefore, if you want
to preserve these (Because Version 3.* of SketchPad does not use long filenames)
you must either RIGHT-CLICK on the file links within the above
directories and then choose "Save Target As...". This allows you to
save the file directly to a disk/drive or after using a LEFT-CLICK
select the "Save this file to disk" Option Box rather
than selecting the "Open this file from its current location". If
you choose this last option then Geometer's SketchPad will automatically open
- if you have it! - but then after viewing the file if you then try to save
it you will not be able to use a long filename.
Scripts
D - Sierpinski
Triangular Gasket Script.gss
A script that makes use of Recursion set to a level defined by the user.

D - Spiral Script.gss
A script that makes use of Recursion set to a level defined by the user.

Sketches
D - All 5 Transformations.gsp
A very useful demonstration for use in the classroom

D - Interactive Quadratic
(1).gsp
Drag the points a, b and c to dynamically change the graph.

D - Interactive Quadratic (2).gsp
Same idea as above but with more details.

D - Lemniscate (1).gsp
A nice circle loci file

D - Lemniscate (2).gsp
A generalised form of the above

D - Maximum-Area.gsp
A very clear animation addressing maximum area of a rectangle with a constant
perimeter.

D - Nephroid (1).gsp
Standard Circle loci construction.

D - Nephroid (2).gsp
A very interesting and different approach in this circle loci file

D - Pendulum.gsp
A very useful file -especially for 'A' level mechanics.

D - Spiral Sketch.gsp
Derived by successive applications of D
- Spiral Script.gss above (Trying to do it in one go with the recursive
script with 21 levels will probably fill up your RAM)

D - Stitching.gsp
A very nice sketch that rotates the figure below giving a very real 3D impression.
See the host of superb files by Chuan, et al. Geometric
Construction.

D - Tetrahedron.gsp
Another very realistic 3D rotation. See the host of superb files
by Chuan, et al. Geometric
Construction.

D - Trammel Loci (1).gsp
A very useful demonstration before/during/after a class practical ?

D - Trammel Loci (2).gsp
A generalised form of the above.

D - Variable 3D Cone.gsp
Another, very customisable 3D sketch. An asymmetrically truncated cone with
a moving pencil line to 'enhance' the 3D effect. See the host
of superb files by Chuan, et al. Geometric
Construction.

D - Variable 3D Cooling
Tower.gsp
Another, customisable 3D sketch. A hyperbolic 'Cooling Tower' with a moving
pencil line to 'enhance' the 3D effect. See the host of superb
files by Chuan, et al. Geometric
Construction.

D - Variable 3D Cylinder-Section.gsp
Another, customisable 3D sketch. An asymmetrically truncated cylinder with a
moving pencil line to 'enhance' the 3D effect. See the host
of superb files by Chuan, et al. Geometric
Construction.