@@ -8,6 +8,7 @@ This seminars series will focus on advanced uses and features of STACK. Each of
 | ------------------------------------------------------------ | -------------------------- | ------------------------------------------------------------ | ------------------------------------------------------------ |
 | **[A practical beginner guide to the STACK API, Sam Fearn](Seminars/2026-10-22-STACK_API.md)** | 22 Oct 2026, 13.30 pm GMT (14.30 pm CET)           |Online                                      | In this workshop, we will demonstrate a simple method for converting course materials to html and embedding stack questions within the resulting html using the STACK API.|
 | **[Embedding STACK questions in digital textbooks using PreTeXt, Georg Osang](Seminars/2026-11-09-STACKinPreText.md)** | 10 Nov 2026, 09.00 am GMT (10.00 am CET)           |Online                                      | In this seminar we will see I will how to set up a basic PreTeXt project and see a few features of PreTeXt. Ten, we will proceed to include STACK questions and discuss considerations around question maintenance as well as limitations regarding data collection.|
+| **[Free-text inputs for STACK and it’s part in an AI-assisted input system, Chris Sangwin](Seminars/2026-12-02-FreeTextInputs.md)** | 02 Dec 2026, 14.00 pm GMT (15.00 pm CET)           |Online                                      | This seminar introduces STACK’s new free-text input, which allows students to write mathematical explanations, including equations and calculations, in their answers. It will also explain how these answers can be marked and how this feature will be used in the development of STACK’s AI-enabled input system.|
 | **[Linear Algebra and Custom Libraries in STACK, Luke Longworth](Seminars/2026-04-29-LA_LibrariesSTACKSeminar.md)** | 29 Apr 2026, 09.30 am BST (10.30 pm CEST)           |Online                                      | The objectives of the seminar are showcase the custom Maxima functions for linear algebra and learn how to use them.|
 | **[Accessibility and STACK, Tim Lowe and Chris Hughes](Seminars/2026-19-02-AccessibilitySTACKSeminar.md)** | 19 Feb 2026, 14.00 pm GMT (15.00 pm CET)           |Online                                      | The objectives of the seminar are to explain and demonstrate how STACK supports accessible graphical and mathematical content through ALT-text, figure descriptions, MathJax features, and screen-reader interaction.|
 | **[Meclib: supporting mechanical systems, Martin Kraska](Seminars/2025-11-27-MeclibSeminar.md)** | 27 Nov 2025, 15.00 pm GMT (16.00 pm CET)           |Online                                      | The objectives of the seminar are to have an overview of Meclib library and see some examples of STACK questions that make use of Meclib.|
 
@@ -0,0 +1,23 @@
+## Free-text inputs for STACK and it’s part in an AI-assisted input system
+
+**Speaker: Chris Sangwin**
+
+**Date:**  Wednesday 2 December 2026,  
+**Time:**  14.00 pm GMT (15.00 pm CET), the seminar will last for 1.5 hour  
+**Location:**  Online on Teams
+
+Microsoft Teams meeting
+
+Join:
+[https://teams.microsoft.com/meet/399384250698492?p=tBOYgauHQu4Rg9I3M5](https://teams.microsoft.com/meet/399384250698492?p=tBOYgauHQu4Rg9I3M5)
+
+Meeting ID:
+399 384 250 698 492
+
+Passcode:
+uy9Zy9hn
+
+#### Abstract
+
+In 2026 we added free-text inputs to STACK. The goal of these inputs is to allow students to type complete mathematical arguments, with mathematics embedded into text using ASCII-math and LaTeX.  We can also allow students to embed calculations.  Flexible “extractor” functions enable authors to automatically assess this input with existing STACK technology, and Moodle’s quiz has “manual grading options” as well.  This seminar will discuss this input and also how it will play a central role in our AI-enabled input system.
+