1. Modelling eLearning systems: UML v CHAT Dr Angela Triki ć angela.trikic@ntu.ac.uk

2. Aim Outline attributes of Activity Theory Consider role of signs and sign systems Describe and review CHAT notation Illustrate UML for modelling activity systems

3. Is this a useful endeavour? Studies of HCI and communities of practice Research activities; Persistent usage of CHAT notation; Importance of: Utility of modelling languages. Impact of Activity Theory on:

4. Attributes of Activity Theory Object-orientedness Internalisation and externalisation Tool mediation Development Signs and sign systems

5. Derivation of Activity Triangle S R SR X Tool SubjectObject

6. Basic structure of activity

7. UML modelling Background context Formal methods soft systems methodologies Assumptions underpinning UML modelling Continual evolution Periodic rupture/breakdowns/disaster Complexity

8. Level 0 model of pharmacy professional development eLearning system

9. A Level 1 class model of a pharmacy professional development e-Learning system

10. A class model representing an instantiation of an elearning programme

11. Use case model Use case model showing a learner view of composite learning tasks contained in understanding a supplementary prescribing scenario

12. Use case model … Use case model showing a learner view of composite learner events

13. Dynamic modelling: Activity Diagrams An Activity diagram representing the behaviour of a word search tool

14. Reappraising CHAT notation

15. 1. Support planning and communication tasks 2. Accommodate to changing needs 3. Involve key participants throughout development process 4. Reduce risk Utility of UML Capacity to:

16. Thank you Angela Trikić angela.trikic@ntu.ac.uk