Table 4.

Events measured in the 5-VARLE.

Variable measured by the Monitoring Module (the 5-VARLE)	Description of events tracked	Number of events tracked
Use of Scaffolding	Registers the number of times that each student uses the Scaffolding Module during the ARLE.	1150
Real-time feedback	The variable registers the exact moment when students received feedback after a mistake is made during the completion of a learning activity in the AR experience.	766
Degree of success	The variable registers when students successfully complete a task in the ARLE. This includes selecting the appropriate products or tools to use for each step in the repairing process.	852
Learning outcomes	This variable stores a ratio of the number of test approved and the number of test answered in the application. Each test is managed by the Assessment Module and consists of five multiple-choice questions. The questions for each test are randomly selected from a database of 109 questions classified by topic and created by the teacher. The test is approved with the five correct answers.	309
Time on-task	This variable registers the amount of time that students spend on the ARLE.	7781