When I studied in the classroom, I observed most teachers like to erase texts on backboards with their bare hands. If he/she would like to use a computer or touch a thing after getting colored, it may not be suitable to proceed it right now. (a teacher may has to go to a washroom and clean his/her hands).
Thus, having an instant eraser attached to their hands may contribute some convenience to our teachers. A material used should work well with particles like chalk or inks and offer easy-to-clean feature to customers.
No comments:
Post a Comment