A good step towards getting 1st and 2nd graders to write their own paragraphs. The image of the house can be useful in students being able to test whether the supporting details relate to and can "hold up" the roof of the house (main idea). For example, if the main idea is that "Pizza is the best food in the world," we need ideas to back that up. Some ideas for the pillars might be, "You can eat it with many different toppings," "It is good for dinner, lunch, or even breakfast!" and "You get to eat it with your hands, which is awesome!"