On Unit 8 Day 5, for the science experiment, we are trying to create sparks in a dark room. Try as we might, we can't make any! In addition to the directions in the guide, we have tried a number of different items and ways to make a spark, with no luck. Is there something wrong with our doorknobs or something? They are the dark iron-looking kind, maybe the coating they put on them interferes? Anyway, I feel really silly

but wondering if anyone else had trouble and what you did about it?
Thanks!!
