This is actually two activities; a compare/contrast chart and a "word sort" that also compares Athens and Sparta.
The compare/contrast chart is basically like a venn diagram but it's better because it has categories on the side. Sometimes students have difficulty figuring out the useful and important information to put into a venn diagram because they don't know where to start. Having categories like "physical geography" and "cultural values" helps them focus on those specific characteristics.
To scaffold this compare/contrast activity, I often write in some words so that my students just have to fill in the blanks, rather than figure out the "right" answer for the box. It is a word document so feel free to edit it to fit your classroom situation.
The "word sort" is something I use as a review. (but you could also do it as a preview activity to see what they know) You will need to cut out the boxes and mix them up. I suggest paper clipping them together, although you could also use an envelope or small plastic baggie. You need enough for half the class.
Then students can work with a partner to put the information into the category it belongs in. There are 3 categories--Athens, Sparta, and Both. For the preview on here, I included some screenshots of the word sort. The first three on each side belong in the "both" category. The remaining squares belong to the side that they are on. (Athens or Sparta) There are 6 boxes that belong in the middle--the "both" category, 5 for Athens and 5 for Sparta. (If you want to help some of your students you can quietly tell them how many go into each category)
I highly recommend having students working in partners or trios for these activities because it is always good to get them talking about the content. They will deepen their understanding and hopefully practice how to respectfully "argue" with their classmates. ("That picture of a statue is Pericles from Athens." "No, I am pretty sure that is a picture of King Leonidas, he was a Spartan. Look at the armor. Spartans would display this type of statue, not Athens")
I recently did another partner activity like this with my 6th graders and I had to model this beforehand. The right way to work together AND the wrong way. Too often, kids will just grab the slips of paper and start putting them where they think they go. But this is really about the experience, not just getting the right answer. Since it is early in the school year, we are still working on being learners together. It doesn't just happen naturally. :)
Let me know if you have any questions.