This routine allows student to uncover common misconceptions as well as discover similarities and differences that are sometimes hidden by over generalization.
One additional benefit is the high level discourse as students look critically to identify similarities and differences.
Students are likely to remember the concept if they were able to discuss and examine the details.
Several people have written about this routine (see resources below.)
Show the image and give students a chance to thinking independently.
Have them share what is the same and what is different with a partner (maybe with a proximity partner) or as a team with numbered heads. Have them continue as long as they have something to share. When their table or partner can't find anymore similarities of differences they stand or sit (change the state from what they started.)
Students could also write on vertical whiteboards so you could reference student thinking for the full class discussion.
Have a full class discussion with key takeaways that address the misconception or the purpose of each.
Additional Resources
Briana West (DNHS) Same but Different Community Builder Jamboard
Video describing the routine
Blog Subtle Differences