Hi Linda,
If by writing prompts you mean interacting with the learning in real time, WiZiQ would be perfect since the participants can use upload images, MS word, PDF, and powerpoint slides/files to the whiteboard as well as communicate via audio, video, and the chat box in real time. Classes on WiZiQ are ideal because they keep the learners focused and on target at all times.
Please let me know if I can be of further help.
Warm wishes,
Nellie