Ask students to identify what seems to be the biggest inconsistency in this trend. Use the Internet to gather data to support or refute your hypothesis. Develop a report explaining your explanation of the lower death rate in these years, including an appropriate way of showing the data you found to support your hypothesis. The writing is clear and well-organized. The hypothesis makes sense.
Evidence is presented to support the hypothesis.
Evidence comes from more than one source. Sources of evidence are credible. Have each student group present their reports to two other groups. As the reports are presented, the receiving students will serve as evaluators, using the criteria developed by the class.