An Assessment of Hillslope Stability Using the Factor of Safety part of Quantitative Skills:Activity Collection
Laura Moore, University of North Carolina at Chapel Hill
In this homework assignment students are asked to consider the balance of forces on a hill slope using the Factor of Safety.

Introduction to Microsoft Excel part of Quantitative Skills:Activity Collection
Dave Hirsch, Western Washington University
This assignment walks students through the creation of an Excel spreadsheet, step by step. It includes fills, references, formulas, and charts.

Using a Mass Balance Model to Understand Carbon Dioxide and its Connection to Global Warming part of Quantitative Skills:Activity Collection
Bob Mackay, Clark College
Students explore the increase in atmospheric carbon dioxide over the past 40 years with an interactive on-line model.

What is the fate of CO2 produced by fossil fuel combustion? part of Quantitative Skills:Activity Collection
Paul Quay
A box model is used to simulate the build up of carbon dioxide in the atmosphere during the industrial era and predict the future increase in atmospheric CO2 levels during the next century.

Atmospheric Vertical Structure and the First Law of Thermodynamics part of Quantitative Skills:Activity Collection
Anthony Hansen, Saint Cloud State University
This set of homework problems is intended to help students begin to discover the importance and utility of conservation principles derived from the First Law of Thermodynamics and provide a first step in evolving from the p-V diagrams the students have seen in their physics coursework toward the thermodynamic diagrams used in meteorology.

Kohler Curves part of Quantitative Skills:Activity Collection
Swarndeep Gill, Pennsylvania Western University - California
An assignment teaching students about Kohler curves that enhances their quantitative skills.

Three-Point Problem by Simultaneous Linear Equations part of Quantitative Skills:Activity Collection
William Frangos, James Madison University
Students are introduced to the use of linear algebra in an intuitive and accessible way, through classroom activity and homework set. The familiar three-point problem is cast in terms of three dimensional analytic geometry, fostering understanding of mathematical models for simple geometric forms.

Earthquake Shaking and Damage part of Quantitative Skills:Activity Collection
Eric Baer, Highline Community College
This student homework and problem set has students quantitatively earthquake hazard, shaking and damage.

Vectors and slope stability part of Quantitative Skills:Activity Collection
Eric Baer, Highline Community College
An in-class activity or homework for graphically solving slope-stability problems with vectors.

Understanding Radioactivity in Geology: The Basics of Decay part of Quantitative Skills:Activity Collection
Christina Stringer—University of South Florida, Tampa FL 33620 This activity was developed for Spreadsheets Across the Curriculum. National Science Foundation, DUE 0442629.
PowerPoint module leading students through creation and manipulation of spreadsheet to forward model an example of exponential decay—the number of remaining unpopped kernels of popcorn in a bag of popping popcorn.