Here's a link to Marjorie Robertson's studies on "Stories Jesus Told" - all the key parables. https://drive.google.com/drive/folders/0B-DIeroEROOLMTdqcWlMZHp5aUk?usp=sharing
Story 1 - Parable of the Sower: Lead in - Garden Idioms with discussion questions https://drive.google.com/file/d/0B-DIeroEROOLRzB2TUtIOG5YbGM/view?usp=sharing