On the Cutting Edge - Professional Development for Geoscience Faculty
Teaching Petrology in the 21st Century
Montana State University, Bozeman, MT
Cutting Edge > Petrology > Teaching Activities > Rb-Sr isotope in-class exercise

Rb-Sr isotope in-class exercise

Allen Glazner
,
Univ. of North Carolina

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: Jun 5, 2008

Summary

This set of problems involves calculations of changes in radiogenic isotope ratios. It requires students to understand the concept of an isochron and how isotope ratios change (or do not change) during magma mixing and crystal fractionation.

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Context

Audience

This activity would be used in an undergraduate (sophomore or junior level) required course in petrology.

Skills and concepts that students must have mastered

This activity requires students to understand the concept of an isochron and isotope ratios.

How the activity is situated in the course

This is a stand-alone exercise.

Goals

Content/concepts goals for this activity

This activity helps students to understand the concept of an isochron and how isotope ratios change (or do not change) during magma mixing and crystal fractionation.

Higher order thinking skills goals for this activity

This activity involves the analysis of data.

Other skills goals for this activity

Description of the activity/assignment

This set of problems involves calculations of changes in radiogenic isotope ratios. It requires students to understand the concept of an isochron and how isotope ratios change (or do not change) during magma mixing and crystal fractionation.

Determining whether students have met the goals

Students have met the goals of this activity if they thoroughly and accurately answer the questions provided in the activity download (see below).

More information about assessment tools and techniques.

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