MOCAH Tools MOCAH Tools for IMS-QTI 2.1for IMS-QTI 2.1

Odette Auzende, Hélène Giroire, Françoise Le Calvez

MOCAH team (LIP6) University Pierre et Marie Curie - Paris

1

MOCAH objectivesMOCAH objectives

To help teachers to create math exercise templates and tests for secondary schools

To express exercise templates and tests in the most interoperable format: IMS-QTI 2.1

To play exercise templates and tests on most Web servers without use of web-service

2

The QTI EditorThe QTI EditorAllows teachers to create easily math

exercise templates with three types of interactions: textEntryInteraction, choiceInteraction, inlineChoiceInteraction

Includes an editor for math formulae and a QTI Constraint Editor for declaration of constraints between parameters

Generates an IMS-QTI 2.1 file

3

Parameters Variables (x,y,z…) Lists

Statement: textEntryInteraction or choiceInteraction or inlineChoiceInteraction

Responses

Summary of the exercise template

Next step: declaration of constraints and Feadbacks with QTI Constraint Editor

The QTI EditorThe QTI Editor

The QTI Constraint EditorThe QTI Constraint Editor

5

declaration of parameters

declaration of constraints

declaration of lists

The QTI Web Pages The QTI Web Pages GeneratorGeneratorTakes as input an IMS-QTI 2.1 file

corresponding to textEntryInteraction or choiceInteraction or inlineChoiceInteraction

Generates a pair of PHP files and a pair of JSP files: the first file of each pair presents the exercise, the second file ensures the feedback

Limits of the QTI Web Pages Generator ◦Does not accept mixed interactions ◦Does not accept adaptive items

6

IMS-QTI file

Initialisations in JSP

Initialisations in PHP

JSP file of the question

PHP file of the question

JSP file for the feedback

PHP file for the feedback

7

The QTI Web Pages The QTI Web Pages GeneratorGenerator

819/04/23

The QTI Web Pages The QTI Web Pages GeneratorGeneratorTwo executions on the Web of the same template:

QTI Metadata EditorQTI Metadata EditorWith this editor, teachers express:

◦usual LOM metadata (title, author…) ◦educational metadata ◦IMS-QTI metadata (itemTemplate, interactionType, feedbackType, solutionAvailable...)

◦the maximal score of an exercise (to express conditions in an assessmentTest)

9

Indexing exercise Indexing exercise templatestemplatesA system of classification is created by

adding to the taxonomy of the domain a graph of competencies and sub-competencies associated with levels of difficulty

This complete system is implemented via a database

Teachers use a Web interface to reference the exercise templates in the database, using the metadata associated with the templates

10

The QTI Test EditorThe QTI Test EditorFor creating IMS-QTI 2.1 tests by:

◦defining parts, sections, subsections◦selecting the exercise templates in the

database◦defining in a section a weighting of the

exercise scores◦defining preconditions and branchrules◦defining feedbacks

Generates the IMS-QTI 2.1 file of the assessmentTest

11

12

The QTI Test EditorThe QTI Test Editor

Selection of items from the database

Structure of the test

The Test GeneratorThe Test Generator

Takes as input an IMS-QTI 2.1 file of a test

Generates a PHP file corresponding to the IMS-QTI test, according to the preconditions and branchrules

On the Web server, the PHP file guides the learner in regard to his/her results

13

QTI Web Pages Generator

JSP and PHP files (question and feedback)

QTI Editor +QTI Constraint

Editor

IMS-QTI 2.1assessmentItem

(exercise template)

QTI Test Generator

QTI Test Editor

Web Server

PHP file of the test

IMS-QTI 2.1assessmentTest

Data Base

teacherteacher

Web interface for recording

templates in DB

teacher

14

QTI Metadata Editor

Overview of the toolsOverview of the tools