With the same level of effort, detail, diligence and analytics used to add tolerance to the DC Theory courses, it is now being implemented into AC Systems & the AC Theory, numerical input style questions.
The setting for tolerance was made using analytics made available because of the data we have based on student submissions. The research again made it clear that + or – 2.5% is the most useful value to implement tolerance in the Blended Learning Numerical Input questions. For instance, with this tolerance on a question whose answer is 100 Volts it means that any submission, by a student, between the range of 97.5 V and 102.5 V will be graded as correct.
Because it is worth stating again…..We have taken a slow, thoughtful, approach to the tolerances because the last thing we wanted to do was implement something new only to have to change it repeatedly. We will view each and every course in the same way before applying further tolerances.
Two more things:
- Tolerance was added, but the rules for solving the questions have NOT changed. The point is, it is always necessary to refrain from rounding intermediate steps.
- It is paramount to understand that the timing is midstride in the course. The implementation began on April 7th. A person who answered and submitted a quiz prior to that time did not have tolerance and those that submit after, will have the tolerance applied to their answer submission.
Like always, if you as an instructor feel a person should be given credit for a submission, you can do that via the override score feature.
I will speak more about this at the April webinar. Be sure to sign up once we make the official announcement of the webinar date and time.