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The documentation on this site will help you understand what a tutor is, how tutors work, and how to build your own tutor using the Cognitive Tutor Authoring Tools (CTAT) and CTAT HTML Editor developed by Carnegie Mellon University. This page provides images of a variety of tutors built with CTAT.
- Getting Started with CTAT Authoring guide for instructions on getting an account and starting to use CTAT.
- Frequently Asked Questions
- Google User Group for questions and help with CTAT
December 4, 2023 - We are completing a reimplementation of CTAT as a web application, and we recommend that both novice and experienced CTAT authors switch to using the new tools. Please contact us at tutorshop-support to request access.
July 16, 2020 - This release supports cognitive tutors whose production rule engines run client-side, in the student's browser, instead of on a remote server. As a result, use of rule-based tutors is no longer constrained by server capacity.
- The new production rule system is described on this page: JavaScript Model Tracer.
- Improved support for collaborative tutors deployed from Tutorshop.
- Various fixes.
June 30, 2017 - This release includes a few new features in support of HTML tutor interfaces, as well as several fixes. Changes include:
- Support for collaboration with HTML tutors.
- New actions for HTML components that allow adding and removing CSS classes through tutor-performed steps.
- Various fixes in the Authoring Tools, HTML components, and the JavaScript example tracer.
Read more in the release notes. Download the latest release of CTAT here.
May 10, 2017 - All new documentation for the Cognitive Tutor Authoring Tools is now on this GitHub site.
Note: Some older documentation for Java and Flash tutors is still available on the old CTAT web site.
January 19, 2017 - CTAT 4.2.0 supports our new CTAT HTML Editor, which allows users to quickly build tutor interfaces. Changes include:
- Support for connecting the authoring tools to the web-based CTAT HTML Editor.
- Improved support for graph editing with HTML tutor interfaces.
- Fixes in HTML components.
Read more in the release notes. Download the latest release of CTAT here.
