This visual teaches/shows the concept of main idea to students. The concept of main idea = the whole house. Students are told that the story is the whole house, so when you ask about main idea you are asking for the idea of the house, not the details (shown as different parts of the house). I have had success with this visual/analogy with ELLs and Language impaired children. This visual uses boardmaker pictures. Great resource to share with classroom teachers as a visual: start with the details of the information (left side of the visual, parts of the house) and then gather them into the main idea (right side of the visual, the house).