Spring of 2020

A sudden outbreak of COVID-19 caused a major quarantine

It disrupts the rhythm that everyone knows

Viruses can isolate distance, but not knowledge

Look at how the management teachers of Wuhan University come up with "clever" and "flexible" measures

To ensure the smooth dissemination of knowledge

In this semester, Guo Rufei, a teacher from Economics and Management School of Wuhan University, taught two courses, namely “R Language Data Analysis Methods and Experiments”,which mainly focused on programming and “Optimization Methods”, which mainly focused on drawing and mathematical deduction. It is not easy to master these two courses through the Internet. A large number of calculations and formulas, as well as drawing and modeling, all put higher demands on the teaching process. Finally, Guo Rufei chose the mode of bilibili live streaming + QQ group learning guidance. In his own words: "Students can use thebilibili APP to screen on TVeasily. This is important for R language learning.Students can use the programming language on their computers while broadcasting live lessons on TV.Students are more comfortable watching live TV broadcasts than watching live computer broadcasts. The bullet screen function can also achieve limited real-time interaction."

However, "The ideal is plump, the reality is skinny".After determining the form of online teaching, the first difficulty appeared in front of Guo Rufei -- It was easy to configure bilibili client with a Windows computer, while Guo Rufei used an Apple Mac computer,so it would be difficult to configurebilibili client.Xue Chang, another teacherfrom EMS, alsoused bilibili for class.Guo Rufei and Xue Chang had many exchanges before the online class.Xue Changused "bilibililive"in Windows system which is very convenient for direct installation.In order to install the live streaming client on the computer,Guo Rufei read several strategies and repeated experiments.Finally,he configured the live streaming environment of OBS + "Barrage library" on his own system.

As a bonus,he has also lit up a new"skill point" by using OBS to record videos. Later,he recorded several videos of R problem solving in OBS and uploaded them to bilibili.

When preparing for the course,Guo Rufei found that for the course "Optimization Method",which required drawing and mathematical deduction,it was not enough to share PPT only by using screen sharing.Guo found the big whiteboard at home, where she taught her children to draw.In this way,he points the camera at the whiteboard during the class and deduces the formula on the whiteboard, so that he and his students can feel like they are in the classroom.

Guo Rufei found it troublesome to switch between the big whiteboard view and the screen view.To solve this problem,Guo Rufei studied OpenBoard and Inklet.He used them together and turned the Mac's trackpad into a writing pad. However, a big problem with handwriting is that it requires a condenser pen. In normal times, it is not difficult to solve this problem, but during the epidemic, capacitor pen can only rely on himself to solve the problem. He spent a night before the class to study how to make a capacitor pen.Finally,he modified a water-based pen with cotton swab and tin foil and made his own condenser pen successfully.By dipping a little water before each use, he could write on the Mac trackpad.

In this unusual spring

All faculty and staff with their own efforts

Make the most beautiful class bell in the online class

Gather the hearts of students together

"Stop class not stop teaching, stop class not stop learning."

The faculty and students of the Economics and Management School have been working hard