Students’ Behavior and Perceptions Regarding Complementary Videos for Introductory Physics Courses in an Online Environment
Round 1
Reviewer 1 Report
Overall, I like this manuscript and the research it presents. This is a time where instructors are using videos more than ever to supplement learning. I think lines 72-79 are unnecessary. I wish the interviews were conducted in the same manner. They don't use an existing conceptual or theoretical framework to analyze their interview coding. Figure 3 is very busy and includes a ton of information. Lines 262 and 263 are a different size font. Maybe break up Figure 3 and have each axe individually in the axe explanation section (3.1-3.7). A few of the results sections could be shortened. The authors include several quotes but so many are not necessary to make the point. A limitations section would be a good addition since this is a certain type of course and there were only 9 interviewees. The interview structure diagrams have several typos.
Author Response
Thank you, very much, for taking the time to review the paper and for such valuable comments. Please, find in the attached documents the answers to every item.
Thank you, very much.
Author Response File: 
Author Response.docx
Reviewer 2 Report
Dear authors,
Your research is innovative and contributes to the knowledge of pedagogy of higher education of physics.
However, the writing and the methodology are somewhat sloppy, and not always apporpriate.
I suggest you pay attention to and improve the following aspects:
1.
starting line 139 and througout the article
use of concepts:
the use of the word 'problems' in 'the concept 'videos of problems' is problematic.
Do you mean exercises or problem-solving?
2.
line 151
What do you mean with 'students interact with the video'? What kind of interaction is possible? And which interaction will you study?
3.
line 191
You have to be correct about the number of videos by which teacher from the beginning. You cannot state in parenthesis that 7 were created by another and that this does not affect the results. You have not investigated that.
Adapt the text by using for example 'for almost all' instead of for 'all' and mention the right numbers.
4.
line 234
you mention two different researchers. Please add if and what their relation is to the course or to the article (the research).
5.
Figure 3 is illegible.
You have to use bigger letters.
In the middle it says 'Likes Videos'. This is not the same as video isage. Where are those who didn't like the videos or had criticism? There seems to be a bias in the research analysis.
6.
line 255
you mention a 'third person'. What is the relation of this person to the course or the research?
7.
line 274
You state that "Students find that videos help to understand."
This is not a conclusion from your research, since you selected the students on this aspect. You say 9 students are representative for all. But how can you prove that is true? There is a methodological problem here, that you have to solve.
You should delete this sentence.
8.
Between 3.6 and 3.7
Lines 400-430
I propose you add a section where you show the relation of those that used the videos and the exam results and to the study progress.
Can you say anything about the added value in this sense of using the videos?
9.
line 433
The first sentence "According to the interviewed students, we found that students consider videos as the most valued resource in the course of Physics, where several resources are available, like text documents and Moodle tests" is not something that you found in your research, but this is due to your own selection of the students.
Please remove this sentence.
10.
line 577
The journal and pages are missing in the reference.
11.
page 651
Reference contains no pages
Author Response
We would like to thank the reviewer for taking the time to review our paper and for such valuable comments. Please, find attached the answer to every comment. We tried to address every single element. Hope the changes are considered appropriate.
Thank you, very much.
Author Response File: Author Response.docx
