Evaluation Wall for Stickers

At the exit of the science center/museum visitors could put the sticker on a wall. The text could be:

 

What do you think about the center? Put your sticker here.

 

Then there should be a scale from fantastic to crap and visitors can put their sticker where they like. In this way you can collect all the stickers and evaluate the visitor experience at the same time.

 

 

Done