The present study reveals that the HBOPPPS teaching model can significantly enhance the final score and the learning ability of students. This effectiveness is because HBOPPPS model takes full advantages of BOPPPS and the convenience of internet teaching as well as enhanced learning initiative of students.
Online teaching and BOPPPS
Electronic learning emerged in the middle of 1990sand it can be broadly defined as any type of educational media delivered through the internet [18].The online course was not well established in China until 2020 when the COVID-19 pandemic occurred [19]. Classically, web-based learning, such as video lectures and Massive Open Online Course [3–5], enhances acquisition of expanding scope of the knowledge on the subject taught in classroom. Thus, it only serves as supplements for offline lecture. Since online resources of learning themselves are not helpful to resolve individual difficult problems and to stimulate students' enthusiasm for learning, it do not match the course objectives tightly and cannot flexibly link different sets of knowledge directly.
In the HBOPPPS, BOPPPS elements were fully incorporated into the teaching process. The six elements of BOPPPS [13] have their unique functions in enhancing learning efficiency. First, bridge-in has a good structure of class beginning with something interesting as the bridge between teachers and students. Second, students can learn the aims of the course and have a general understanding of the content by emphasizing them at the beginning of lectures. Third, the pre-assessment is a challenge for students and guides their attention to the main lecture. Fourth, BOPPPS emphasizes a participatory learning which puts stress a student-centered approach and can inspire the initiative of students. Fifth, the post-assessment would let the teacher know how well the students have mastered the content and what they need to be taught immediately. Finally, a summary is necessary that can give the students a mind mapping of the course content and in turn strength their memory. However, in the era of Internet plus, the HBOPPPS is necessary and effective in achieving a better teaching outcome than either the online or offline teachings.
In the present study, the HBOPPPS model, combining the benefits of online teaching and the advantages of BOPPPS model of offline teaching, largely resolves the limitations of classical online teaching model while compensating the space and time limitations of offline teaching, broadening students’ knowledge, and enforcing teacher-student interactions, and therefore has better teaching effectiveness.
Hybrid teaching method
Pure online teaching simulating the BOPPPS offline teaching can partially resolve the limitation of classical web-based learning since it has clear goals and allows interactions between teacher and students directly. However, a 5-year study showed that the full online course have higher fail rate than the face-to-face offline course[20]. Our initial trial applying a hybrid teaching model in Class 2018 by providing students with full lecture in BOPPPS model plus micro-video lecture online did not yield ideal results, particularly in their answering objective questions .During the spring semester of 2020, all of the schools in China were forced to apply full-time online courses due to COVID-19 pandemic. However, the students might not be well prepared for it and did not have good examination scores (our unpublished data). These facts led us to design the present HBOPPPS model that contains both the merits of online and offline teaching. The results reveal that this hybrid teaching model can activate students’ interest, help them perform self-study and expand the depth of what they learned [21]. In addition, students really like the interactions with teachers given by the offline course and the possibility to perform small group work in an online environment. Correspondingly, they are mostly in favor of the hybrid course, a finding consistent with the reports from other groups [22, 23].
In our preparation of the teaching, 80 home-made micro-lecture videos were recorded and posted on “Xuexi Tong” that is the platform for students to participate in the online teaching and interactions as well as for calculation of students’ activities automatically. Additionally, it is convenient for the feed-forward and feedback communications between teachers and students. Thus, “Xuexi Tong” becomes a powerful tool in establishing this HBOPPPS model.
Factors contributing to the effectiveness of HBOPPPS
The HBOPPPS group of Class 2019 had significantly better results than that of Class 2017 and 2018 for teaching effectively, as measured by the final exam scores. Besides, Class 2019 also had the higher rate of excellence and lower rate of failure, which indicates that the HBOPPPS has effectively improved students' learning efficiency and outcomes. This finding was consistent with other reports that revealed the higher effectiveness of the hybrid teaching than traditional methods [24, 25].
Analyzing the reason of students’ improvement, we found that the final exam scores had a positive relationship with the online score coming from the App’s calculation, which could reflect students’ activity on learning Physiology. Both the BOPPPS offline and the online teachings are designed to enhance students’ interest, activities and learning ability and thus make them to think and study independently and creatively. The advantages of HBOPPPS from the feedback of students include that it is convenient to reproduce the course content and effectively improves students’ learning efficiency. In addition, timely-feedback interactions between the teacher and students are also attributable to the better outcomes of HBOPPS model.
Notably, the home-made micro-lecture videos are very popular among students; combining with the online guideline, they become an effective venue for the students to master the key knowledge in the lecture. This finding is consistent with other studies that showed that there is a positive correlation between micro-lectures and the final scores [26, 27]. The weak correlation coefficient between them is likely because the less differentiated performance of online activities of the students, a feature different from that of international medical students [16].
Through the analyzing of questionnaire, we could see that most of the students satisfied or very satisfied with this teaching model since the HBOPPPS did improve their learning ability. In Class 2019, 61.7% of students expressed their preference for using this hybrid teaching method in future studies. This finding gives us the confidence in performing the HBOPPPS in teaching of Physiology in future.
Limitations and further improvements
Notably, most of the students thought it was difficult to distinguish whether or not the online resources that students found were suitable for discussion. This is a common problem for all of the people surfing the web in this era since everyone can express their own ideas on the internet, high or low quality, and they need to distinguish these messages carefully, which clearly increases the burden of their study. The second disadvantage or reason that 30% of the students didn’t like this hybrid teaching is that they thought it was a heavy load to accomplish the preview task and course assignments. This is likely because Chinese students are used to traditional “filled-in” offline teaching which they just need to listen and then remember. By contrast, this HBOPPPS model requires them to learn by themselves first and that makes them feel a kind of pressure. However, a pressure doesn’t mean bad since it can also be a driving force to promote college students' ability of self-learning, in general. In addition, the improvement of students' ability to answer multi-choice and single answer questions is not significant compared to the classical BOPPPS model. This seems because the HBOPPPS has not put stress on keywords and definitions of individual facts while stressing on the analytical ability of the students due to the time limitation. Lastly, the minor difference in the components of HBOPPPS among different teachers could also be a contributor, such as option for interpreting the micro-video lecture or using pre-assessment with the quiz following the bridge-in, and students-led summary or teacher-led summary in the lecture, etc.
To make BOPPPS more effective, we have also developed a TESOT teaching model for the education of international medical students. TESOT was created based on our identification of the learning obstacles and teaching style preferences[17], and then resolving these problems by using the components of active-learning classrooms [28], assisted by online guidance [16]. In the present study, we also tried to incorporate some components of TESOT into the BOPPPS model, such as including quizzes before and after the main lecture and partial students-led summary. However, the learning obstacles that revealed in the present and previous studies [17] were not considered, such as the course connections, instructions on using online resources, and limitations of self-studying time.
To further improve the efficiency of teaching Physiology, it is necessary to refine the structures and contents of HBOPPPS model while reducing students' burden of self-learning. This effort, for example, can include stressing on the interconnections between course/lectures by adjusting the contents of micro-video lectures and quizzes, making the online instructions clearer, and strengthening the digestion of course contents by students-led summary in the classroom and avoiding open end of the online discussion.