ED-MEDIA 1999 Proceedings Book - Association for the ...
ED-MEDIA 1999 Proceedings Book - Association for the ... ED-MEDIA 1999 Proceedings Book - Association for the ...
Responsibilities: R1: If a teacher role sets quiz paper, then all student roles must submit their answer in one day. R2: If a student role submits his/her answer, then a TA role must revise the answer in two days. R3: If a TA role revise a student’s answer, then the student role must read the revised answer in two days. R4: If a teacher role set a quiz paper, then a TA role must announce correct answer in two days. Figure 2: Quiz activity Figure 3: Web interface of activity regulation tool The activity regulation tool interface is illustrated in figure 3. To organize the learning groups, the instructor can include a set of the participants in the activity regulation tool. For instance, the quiz activity in figure 2 includes four participants in a learning group to perform the quiz activity. Furthermore, the roles and role assignment allows instructors to organize the activity. For instance, an instructor can specify that a quiz activity involves Student, Teacher, and Teaching Assistant (TA) and assign each participant in the learning group to play appropriate roles. In addition, the activity model also contains a set of actions that participants can perform in the learning activity. As illustrated in figure 3, instructors can organize activities by the provided activity regulation tool. In addition, to specify the capability of each participating role, the activity regulation tool allows instructors to specify a set of capability grants. The capability grants indicate whether a participating role can perform an action at a moment in a learning activity. There are four cases when a participating role performs an action. (1) Statically accessible: A participating role can always perform an action. For example, a student can always read quiz paper as given in G1 in figure 2. (2) Statically inaccessible: A participating role can not perform an action. For example, a student can not revise other students’ answer. In this case, there is no capability grand in the activity model. (3) Privately accessible: An action can only be performed by a particular participating role. An example is that a student can only read the revised answer of his/her answer. Other students are not allowed to read the revised answer. Hence, the access grant G10 is set in the quiz activity. (4) Temporally accessible: A participating role can perform an action only at some moment during the activity. For instance, a student can not read the correct answer until he/she has submitted his/her answer as regulated in G4. Another example is that a student can not submit his/her answer one day after the teacher set the quiz paper (G13). To specify these temporal properties, a temporal concept is required. Many temporal formalisms such as temporal logic, timed temporal logic and metric temporal logic (MTL)(Alur and Henzinger 1997) are available to specify the temporal property. For instance, the capability grant G4 in figure 2 regulates that a student role can not read correct answer until he/she has Submitted his/her answer. This capability grant can be expressed in MTL as not ReadCorrectAnswer Until Submit. And
the capability grant G13 as Not SetQuizPaper and Eventually >1day Submit to express that no learners submits his/her answer one day after the teacher set the quiz paper. To regulate the responsibility of each participating role, the activity regulation tool contains a set of interaction rules. The interaction rules specify what a participating role should do when/after other participating role performed some actions. For instance, the R1 in quiz activity regulates that if a teacher role sets quiz paper, then eventually all student roles must submit their answer in one day. In this aspect, we use also MTL to specify such interaction rules. For instance, the interaction rule R1 can be regulated in MTL as If SetQuizPaper then Eventually
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<strong>the</strong> capability grant G13 as Not SetQuizPaper and Eventually >1day Submit to express that no learners submits<br />
his/her answer one day after <strong>the</strong> teacher set <strong>the</strong> quiz paper.<br />
To regulate <strong>the</strong> responsibility of each participating role, <strong>the</strong> activity regulation tool contains a set of<br />
interaction rules. The interaction rules specify what a participating role should do when/after o<strong>the</strong>r<br />
participating role per<strong>for</strong>med some actions. For instance, <strong>the</strong> R1 in quiz activity regulates that if a teacher role<br />
sets quiz paper, <strong>the</strong>n eventually all student roles must submit <strong>the</strong>ir answer in one day. In this aspect, we use<br />
also MTL to specify such interaction rules. For instance, <strong>the</strong> interaction rule R1 can be regulated in MTL as If<br />
SetQuizPaper <strong>the</strong>n Eventually
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