Eric Gold

Assignment 5

GSP Script Tool Library

Write-Up #5.  Create a file on your home page with links to various GSP script tools you have produced. The write-up will be a library of GSP files with script tools..

The creation of a personal library of GSP script tools for doing constructions you might use several times is an efficient way to organize and store your work. As we have observed students working on problems in our classes, we have been surprised by the number of times we have seen someone repeat a complete construction. Using a script tool, for example, to construct the circumcircle 4 times makes more sense than repeating the construction 4 times from scratch on the same figure.

Making a script tool. The simplest way to make a script in GSP 4.02 is to complete a desired construction, select all (either from the menu or by drawing a box around it), and then going to make the script tool using the script tool control in the toolbox. You may want to annotate the comment section to a) help identify "given" objects for the script tool and b) to indicate whose script tool it is. To save a script tool so it is always available on YOUR computer, it must be saved to the TOOL FOLDER in the folder containing the Sketchpad application. To make it available in your web document, your save the file to your html document folder and make a link to it as a GSP helper application.

Here is a list of script tools we think would be worth saving and using in your work with GSP. We are sure you will add to the list as you develop more experience with this application.

GSP Script Tools

1. Centroid

5. Incenter

6. Incircle

10. Pedal triangle – construct triangle vertices and point within the triangle

11. Center of Nine point circle

12. Nine Point Circle

13. Trisecting a line segment

14. Equilateral triangle, given a side

15. Square, given a side

16. Isosceles triangle, given base and altitude

17. Triangle Centers (H, G, C, and I)

18. Triangle Centers with Euler Line

19. Locus of vertex of a fixed angle that subtends a fixed segment.

20. Divide a segment AB into two parts that form a golden ratio.

22. Pentagon, given a side.

23. Hexagon, given a side – construct the desired side

24. Octagon, given a side.