Thank you! In the third paragraph, I remove some sentences and add the following ones:  

I believe reducing this gap can start from a linkage between their prior knowledge of introductory theoretical principles/assumptions and more advanced contents what they are currently studying. I reminded students of the relationship between some basic statistical theories or application rules and todays lecture or assignments by asking questions or reviewing the related summary pages in lecture slides together. Also, I focus on giving student questions, not direct answers to encouraged them to establish their own rationale or premise in refining the problem and reaching an answer in lab sessions. Students came to be familiar with the complete cycle of statistical analysis, i.e. when to use certain methods and to how to interpret the results. For instance, more students became obtaining partial points by showing their choice of application rules in assignments. 

In the fourth paragraph, I would like to change the tone of the following sentence: from The Quantitative analysis class often lacked such communication to The Quantitative Methods class is often considered lack of such communication. Does it seem better? 

I also add an example in the fourth paragraph and try to make verb tense consistent (e.g. yours were, I arrive early or left late.. ) 
Some of students who did not participate at first when I asked questions tended to more actively participate in class. Also through interactions with students in lab sessions, I am able to identify...

I would appreciate your work!!