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Lets students check answers to math and science questions

Spotter lets students check their answers to math and science questions. It tells whether the answer is correct, and can also help diagnose an incorrect answer; the instructor can also add hints. Spotter isn't limited to numerical problems. For instance, if the problem is to solve the equation x-b-7a=0 for x, the student can type in either b+7a or 7a+b as the answer, and the program will know it's correct. Spotter is set up as an interactive web page that you can access through any computer that has an internet connection and a web browser.


User manual included and available in PDF format from

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LicenseVerified byVerified onNotes
PerlJanet Casey10 July 2002

Leaders and contributors

Benjamin Crowell Maintainer

Resources and communication

AudienceResource typeURI
Bug Tracking,Developer,

Software prerequisites

Required to usePerl 5.6 or later

This entry (in part or in whole) was last reviewed on 14 January 2017.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

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