This simple three question form is a great way to introduce elementary students to looking and discussing artwork. It takes them through the steps of observation, forming questions, and making inferences.
I usually teach it the first time by allowing a class to vote on a selection of artworks to look at. Once we've picked an artwork, we go one question at time all together as a class.
I usually start with a good and bad example for each question. Ex: I notice a really weird piece of art that's not very good - (this is an opinion, not fact) Ex: I notice there are many people in this picture, some are young and some are old (this could be a fact)
All students share 1 answer from the first one, and volunteers may share on the second and third, but do not have to. Students can then critique another work on their own (if you print the questions on the front and back of a paper) or you could have a class discussion. This can even be split up into multiple lessons and you could have students answer one question per class period.