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)
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This page first made public: Dec 11, 2008
Skills and concepts that students must have mastered
1) The Fo-Fa binary phase diagram. I will give students a bulk composition, and then ask them to trace the history of melting or crystallization.
2) The concept of a "phase" and of mineral components.
3) An introduction to Excel, showing students how to enter an equation, and use the fill-down commands
4) An introduction to the equilibrium constant (this is review from CHEM1A, but students usually appreciate the repetition, and often state they feel they learn more Chemistry from these exercises than they do in their CHEM course...)
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
This is part of a sequence of assignments where students learn about mineral components – what they represent (in regards to solid solution phenomena especially), and how they calculated. Though students will not use a binary solid solution diagram per se, I use this HW assignment to re-emphasize such concepts. This assignment also allows students to begin tests of equilibrium, so they must understand the concept and use of an equilibrium constant.
Determining whether students have met the goals
My web site (http://www.csufresno.edu/geology/Faculty&Staff/Putirka/Keith_Putirka.html) has a spreadsheet for olivine-liquid calculatins, but I do not mention this in class, as I like to see students attempt the calculations on their own (which is why I do not used a published thermometer, even though their are other thermometers which are more accurate). But the web site could be useful to provide students with a self check, after the assignment as been completed.
Download teaching materials and tips
- Activity Description/Assignment (Microsoft Word 44kB Dec11 08)
- Instructors Notes (Microsoft Word 2007 (.docx) 25kB Jun6 11)
- Tables 1 and 2 (Excel 13kB Dec11 08)