# Rich interactive assessment of STEM subjects with Numbas

Christian Lawson-Perfect

Newcastle University

# Numbas

An open-source e-assessment system designed for mathematical subjects.

Developed at Newcastle University since 2011.

Used around the world.

# Key features

- Randomised questions.
- Easy to use and accessible.
- Adaptive behaviour.
- Customisable everywhere.
- Lots of maths features.
- Runs standalone.

# Question types

- Math notation
- Number
- Matrix

# Question types

- Multiple choice
- Short text
- Make your own

# Question types

- Code
- Spreadsheet

# Interactive diagrams

- GeoGebra
- JSXGraph

# Modes of use

- Sequential
- A fixed list of questions.
- Menu
- Student picks which questions they want to try.
- Diagnostic
- Adapts to student's performance.
- Explore
- Student picks their own path through an activity.

# How we use it

- Large banks of practice material.
- In-course assessment: open for two weeks, worth 2% of module.
- Labs: students enter measurements; Numbas marks calculations.
- High-stakes assessments for many maths modules, as well as large service courses.
- Hybrid exams: some automatically marked, some marked by hand.

# How to do it

- Large question-writing team.
- Think creatively about assessing hard topics.
- Check everything very thoroughly
*in advance*.

# Thanks!

- Website
- numbas.org.uk
- numbas@ncl.ac.uk
- Fediverse
- @numbas@mathstodon.xyz
- Source code
- github.com/numbas

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