1) go to https://jogl.dev.java.net/servlets/ProjectDocumentList and download the latest version of the Universal Binaries version of JOGL (should be a zip file) for Mac OS X.
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2) Unzip and copy all the files from the unzipped lib folder to /System/Library/Java/Extensions (there should be 6 files you are copying, 2 jar files and 4 jnilib files)
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Note that vecmath.jar seems to already be included in Mac OS X (although I'm not sure if it's the same vecmath.jar as you have so after more testing i'll be able to confirm this).
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Once this is done, these files are automatically included in all Eclipse projects (new and old), and you should be able to run the homework from Terminal or Eclipse without having to edit your .cshrc/.profile or go through and manually add the jars to your library.