These questions are a wonderful resource in my classroom. I use these to assess my students’ understanding of a concept. My theory is that if a child can explain a concept in words, they have a good understanding of that concept. I use these open-ended questions for independent work during math centers, math journaling, tickets out the door, and assessments. Using a scale of 1-4 to rate each question is a good way to keep a record of how each child does on a question.