Usually twelve to fifteen questions are sufficient for a one-hour study. In addition to evaluating individual questions, look at the study as a whole. ☐ Dp the questions flow harmoniously? ☐ Do they follow the general sequence of observation, interpretation and application? (This pattern may occur more than once in the study.) ☐ Is there a proper balance among these three types of questions? ☐ Does each question lead naturally into the next? ☐ Does the study achieve the purpose you worked out initially?