Among my favorites: Crop It.
I learned about Crop It on Teachinghistory.org. This is a fabulous website that I recommend you explore at your leisure this summer. Per TeachingHistory.org, "Crop It is a four-step hands-on learning routine where teachers pose questions and students use paper cropping tools to deeply explore a visual primary source."
Teachers ask students to use the easily created Crop It tool (template provided) to slow down and "carefully explore their image by using the tools." Teachers "pose a question and ask students to look carefully and 'crop' to an answer. For example, ask students to:
Crop the image to the part that first caught your eye.
Think: Why did you notice this part?
Crop to show who or what this image is about.
Think: Why is this person or thing important?
Crop to a clue that shows where this takes place.
Think: What has happened at this place?"
p.s. Looking for a great lesson using historic photographs? Try our Women at Work Lesson Plan: Clothesline Timeline Lesson Plan (a high interest, one-two class period lesson for the end of the year).