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M & M Decay
Rebecca Teed, Wright State University-Main Campus
This is a simulation of radioactive decay which illustrates what a half-life is and explains some of the challenges involved with radiometric dating. Pennies or other cheap coins can be substituted for M&Ms if ...

On the Cutting Edge Exemplary Collection This activity is part of the On the Cutting Edge Exemplary Teaching Activities collection.
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Hierarchical Alignment of Timelines
Ilyse Resnick
In the hierarchical alignment activity students progressively and hierarchically align scale information to a spatial linear representation. The progressive alignment of scales may alleviate the conceptual ...

On the Cutting Edge Exemplary Collection This activity is part of the On the Cutting Edge Exemplary Teaching Activities collection.
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Multiple temporal scales of landscapes and landforms
Phil Stokes, The University of Arizona; Marguerite Forest, Florida Gulf Coast University; Steven Semken, Arizona State University at the Tempe Campus
This exercise provides students with a timescale and list of geomorphic landforms and processes. The activity requires that students utilize their knowledge of process-driving mechanisms to place landforms and ...

Relative Age Correlation
Gwen Daley, Winthrop University
Students learn to apply basic correlation principles to geologic cross-sections.

Personal Timeline
Rebecca Teed, Wright State University-Main Campus
Students start this worksheet by listing the most important events in their own lives, plotting them on a timeline, and then doing the same with Earth history events. Usually, their personal timelines will resemble ...

Crater Counting Lab exercise
Kevin Mullins, Coconino County Community College
This lab is designed to teach students how we can estimate the age of other planetary surfaces by counting and size-binning impact craters. It also illustrates some examples of how erosional or deopositional ...

Teaching radioactive decay & radiometric dating: an analog activity based on fluid dynamics
Erika Grundstrom, Vanderbilt University
Radiometric dating/geochronology is a difficult concept for students. Using the (rather messy) medium of shampoo, students watch it flow through holes of different sizes, determine the exponential decay equation, ...

Drawing unconformities
Gina Szablewski, University of Wisconsin Milwaukee
Thess simple sketches are used in class to show the development of different unconformities.

Relative vs. Numerical Dating and Geochronology with Beads
Karen Viskupic, Boise State University
Students use relative dating principles to interpret the ages of rocks in a block diagram. They then "date" samples from these rocks to test their relative age hypotheses. Sample dating is done by ...

Greenstone Belt Assessment
Pamela Nelson, Glendale Community College
Students examine and describe rocks found as part of a geologic sequence formed during the Precambrian Era and determine the geologic significance of each of the rocks in order. The capstone (not included on the ...