We are in the process of developing some small group studies but they won’t be ready for a year or so. You are right that Integrate is more for science classrooms, though some people have adapted it for adult small groups. It isn’t really a “Bible study” though.
Origins might work, though it does focus on certain issues (like the age of the earth, the flood, creation) and goes through what different Christian positions are and what the strengths and weaknesses are. The big pro is that it is set up for using with small groups and the book has lots of additional resources like a video series and discussion questions.
If you want to just touch on things like the “two books” idea (God reveals truth through his works, nature, and his words, the Bible, you might be able to find some articles on the BioLogos website to jump off from. You could talk about the Body and how Christian scientists can be an asset to the church when they are trusted not treated with suspicion. There are lots of profiles on BioLogos.org of Christians in science treating their work as a vocation that advances the Kingdom. Another interesting idea for people is jus basic epistemology stuff. How do we know truth from reading the Bible/listening to the Holy Spirit/discerning with other Christians and how do we know truth from studying the natural world? What kinds of questions can each kind of knowledge help us answer and what are the limitations? How are the processes of drawing conclusions in each area similar or different? What makes a theological or scientific claim trustworthy? Most people have never thought about how our theological understanding has developed over time as the church understands God better and has new situations to apply truth in, and our scientific understanding has developed over time as we understand nature better and come up with new ways to test, observe, and analyze what we find. In both cases there are processes for testing new ideas and valuing consensus, it’s not a free for all.
Katharine has a new series out with Tearfund that is explicitly Christian and addresses creation care from a Christian values/ Bible perspective. It’s here: