Scaffolding means breaking up or down the learning process into chunks. For example, when scaffolding a reading assignment, you might open the text to discuss key vocabulary and then apply it to an example. Check out this article for 6 strategies you might use with your students: 6 Scaffolding Strategies to Use With Your Students | Edutopia.
Many would agree that for inquiry to be alive and well in a classroom that, amongst other things, the teacher needs to be expert at asking strategic questions, and not only asking well-designed ones, but ones that will also lead students to questions of their own.
From the Center for Excellence in Teaching and Learning at Iowa State University: Leading Classroom Discussion.