object design

Let’s Talk

Implementing Message Interfaces in Learning Objects

Michael AndersonUT System TeleCampus

Why Learning Objects?

Portability across multiple learning management systems

Cost-effective reuse of expensive instructional components

When Learning ObjectsTurn Bad

Despite rich media and effective designWith no communication

– from feedback– from other learners

A routine series of clicks

Social networks connect learners through shared objects

Definition: Learning Object

Wayne Hodgins’ Lego blocks

David Merrill’s event (CDT)

Chuck Barritt’s RIO (Ruth Clark)

David Wiley’s atom (eCornell molecule)

Stephen Downes’ RSS (Alan Levine)

Application: UTTC Context

Digital (fully online) Discoverable (metadata) Self-contained (zip package) Internally consistent (design) Provide an instructional event (feedback) Do not draw on outside resources (for

content) Polymorphic

OO Diagram from CS (AYCDISAM)

DataData

Data

Encapsulated data (state information)

Method

Method

Encapsulated logic (service implementation)

ParameterInterface to services

Baby Steps

userID from Blackboard Assessment score to Blackboard Assessment score to PeopleSoft, CF… RSS feed to Blackboard

Toddling

Trigger communication based on learner actions

Accept communication from a user to a community

Send assessment from test object and return results to menu object

Initiate communication from a user to an agent-selected user

Technologies

JavaScript and XMLHttpRequest w/server-side scripting like .NET (AJaX)

Java Flash Remoting

Thanks for listening