Computer Algebra Based Assessment of Mathematics Online

1
Computer Algebra Based Assessment of Mathematics
Online

• Laura Naismith
• Centre for Educational Technology and Distance
  Learning (CETADL)
• Chris Sangwin
• LTSN Math, Stats OR Network

2
Introduction

• CABLE Computer Algebra Based Learning and
  Evaluation
• A web-based, open source
• infrastructure for authoring,
• testing, storing, presenting
• and marking lightweight and
• flexible mathematical learning objects.

3
System Features

• Modular design approach to separate out CAS
  functions
• Learning objects consisting of CAS instantiation
  instructions, question stem, marking
  procedure and solution template
• Flexible options and answer tests
  that allow the same object to be
  used in different contexts
• Relational database to store learning
  objects, students attempts against
  particular learning object instances

4
Demonstration

• Implementation details
• PHP 4.3
• Logicampus VLE
• Axiom CAS
• www.cable.bham.ac.uk

5
Future Work

• Develop full working prototype
• Investigate use of interoperability standards
• Investigate assessment of individual steps
  (Beevers et al, 1995) to facilitate
  awarding of partial credit

6
Acknowledgements

• This research is funded through
• The LTSN Maths, Stats and OR Network
• Microsoft UK Limited