Modeling the carbon cycle of the anthropocene part of Quantitative Skills:Activity Collection
Heather Stoll, ETH Zurich
Students use an Excel sheet to complete forward and inverse models of changes in carbon distribution between atmosphere, ocean and the biosphere from 1751 to the present and several centuries into the future. The model is given as a mostly complete package, into which students input emissions data in various sensitivity tests.

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.

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.

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.

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.

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.

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.

Modeling the interior of the Earth using Seismic Waves part of Quantitative Skills:Activity Collection
Eric Baer, Highline Community College
Students use a variety of tools to explore the interior of the Earth in this inquiry activity.

Radioactive Decay and Geochronology part of Quantitative Skills:Activity Collection
Kirsten Menking, Vassar College
Students create a STELLA model of the radioactive decay process.

Temperature Profiles in Permafrost part of Quantitative Skills:Activity Collection
Kirsten Menking, Vassar College
Students use STELLA to create a model of heatflow in permafrost to attempt to replicate the findings of Lachenbruch and Marshall (1986), who used inflections in the geothermal gradient of Alaskan permafrost to search for evidence of climatic change.