Understanding Big Ideas: The center of guided math lessons
Here is a great chart that really illustrates this concept of Big Ideas for primary concepts. Teaching with Big Ideas helps to teach students math instead of just bouncing from lessons and doing activities. We can tend to get so bogged down in the day to day and just teach from lesson to lesson. Oftentimes we lose sight of the Big Idea. In guided math groups you should be thinking about what gaps are there in understanding of the big ideas in math and then what are the interventions that will successfully help to fill those gaps. The actual math that we want students to learn comes from the Big Idea.
Be sure to see the other post about Big Ideas.