It was my substitute teacher's first day on the job, and this is what we walk in class to. Dry erase markers on a promethean board isn't it yall : r/Wellthatsucks
How do I calibrate my ActivBoard?
BRAND NEW PROMETHEAN Activpen3 Interactive whiteboard pen nib £10.00 - PicClick UK
Troubleshooting USB connection problems
Getting artistic with the ActivPanel – Promethean World