A MiddleWeb Blog When I walked into a one-hour session at the most recent National Council for the Social Studies annual conference – a mega-gathering with ideas and fellow teachers spilling from every corner, not to mention a celebrity sighting of Constitution USA guru Peter Sagal – I didn’t expect to walk out ready to transform an entire unit in my eighth-grade history class. But my mind opened up as I sat in “Bending the Arc Through History and Literature,”…