Calculating Rb-Sr Isochrons
This activity was selected for the On the Cutting Edge Reviewed Teaching Collection
This activity has received positive reviews in a peer review process involving five review categories. The five categories included in the process are
- Scientific Accuracy
- Alignment of Learning Goals, Activities, and Assessments
- Pedagogic Effectiveness
- Robustness (usability and dependability of all components)
- Completeness of the ActivitySheet web page
For more information about the peer review process itself, please see http://serc.carleton.edu/NAGTWorkshops/review.html.
This page first made public: Oct 22, 2008
Skills and concepts that students must have mastered
How the activity is situated in the course
Content/concepts goals for this activity
Higher order thinking skills goals for this activity
Other skills goals for this activity
Description of the activity/assignment
Determining whether students have met the goals
Download teaching materials and tips
Teaching Notes to Accompany Calculating Rb-Sr Isochrons (Microsoft Word 75kB Oct21 08) – directions on how to calculate slopes and intercepts from the Excel spreadsheet, and how to use the slope to calculate an age.
Rb-Sr Isochron Examples and Homework (Excel 52kB Sep7 08) - this file contains examples and homework data for the exercise. Each example and homework data set is a separate tab in this Excel spreadsheet.
- Cathedral Peak Granodiorite Graph (PowerPoint 2007 (.pptx) 39kB Sep29 09) - graph of problem solution. As an alternative to SLOPE and INTERCEPT, the student can get this information by making a scatter chart of the data, and then inserting a linear trendline with equation displayed on the chart....this is pretty visual and helpful for many students.