Here is a Cultural Literacy worksheet on the concept of social sciences. This is a half-page document with a two-sentence reading and two comprehension questions. It is the sparest of introductions to the concept, but still manages to cover the necessities of defining something that can be broad and perhaps a bit too flexibly abstract in meaning.
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.