# STACK

STACK is the world-leading open-source (GPL) automatic assessment system for mathematics, science and related disciplines.

- Students type in mathematical expressions, and are not restricted to multiple choice.
- Separate
*validation*and*assessment*with an emphasis on formative assessment. - Random generation of questions.
- A wide variety of input types, including line by line working.
- Support for multipart questions.
- Support for scientific units and significant figures.

A case studies collection and a flyer about the STACK project are available.

In 2019 we produced a self-contained "Getting started with STACK" guide to authoring STACK questions.

# Overview

Welcome to the official user documentation for STACK.

**About**

General information about STACK, including:

**Authoring**

Documentation for question authors, including:

- An authoring quick start guide, which can be used in conjunction with the "Getting started with STACK" guide.
- Information on various authoring topics, such as answer tests, inputs, potential response trees and translations.
- Frequently asked questions.
- Information on using the CAS Maxima for question authoring, including randomisation, plotting graphs, and expression simplification.

**Students**

Information for students using STACK, including:

**Installation**

**Developers**

Topics for developers, including: