Flash, PowerPoint, authorware, geometric sketchpad and web form, etc.
The courseware of distance education resources is basically Flash and PowerPoint. The suffix swf is made of Flash, and the courseware of PPt is made of PowerPoint.
Commonly used courseware is basically ppt, which is easy to use and convenient for class.
Flash is also available, but it is relatively troublesome to make.
If you want to do competition courseware, it's better to be Flash.
Please add points if you are satisfied.