Grouping or non-grouping of students is deferred to the classroom teacher. Investigate information on radiometric dating . Determine if these events were placed in time by relative or absolute dating. Students organize these events into a geologic timetable of their own. Timetables should be clear and easy to understand.
Evidence supporting which dating method seems superior in placing the event in time.
After constructing personal timetable and researching dating methods, students should group materials into a portfolio to be handed in to instructor for evaluation. An example might be the approximate date of the land bridge between Asia and North America. Students choose one of the options and perform the task. Choose a particular geologic event and its date. Tell whether it was dated by absolute or relative dating.