GEO-Logic: Continental Drift and Plate Tectonics part of Quantitative Skills:Activity Collection
Laura Guertin, Penn State Brandywine
Students are asked to match up lecturers with what day and time they teach, and how many students they have based on clues given from several different perspectives. In the second part of the activity, students are asked to learn more about the historic figures mentioned in the activity by doing reading and web research.

GEOLogic: Museums and their Dinosaur Displays part of Quantitative Skills:Activity Collection
Laura Guertin, Penn State Brandywine
Students are asked to match up five top Museums with 2 fossils that they have on display based on clues presented from various points of view.

Daisyworld Lab part of Quantitative Skills:Activity Collection
Kirsten Menking, Vassar College
Students explore a STELLA model of Daisyworld, a self-regulating system incorporating positive and negative feedbacks.

Back-of-the-Envelope Calculations: Age of the Earth part of Quantitative Skills:Activity Collection
Barb Tewksbury, Hamilton College
Question The Earth is about 4.6 billion years old. Let's try to get a perspective on how long that really is. Suppose that you decided to count to 4.6 billion and that you counted 1 number every second. How ...

Using Melting Ice to Teach Radiometric Dating part of Quantitative Skills:Activity Collection
Developed by Donald Wise, Franklin and Marshall College. Taken from Wise, 1990 . Related Links Radioactive Decay
Students are challenged to a Sherlock Holmes-style mystery in which they construct their own decay curves of melting ice to determine time-zero.

Radiometric Dating part of Quantitative Skills:Activity Collection
Related Links Radioactive Decay Exponential Growth and Decay Peter Kohn - James Madison University Christopher Gellasch - Uniformed Services University Jim Sochacki - James Madison University Scott Eaton - James Madison University Richard Ford - Weber State University
This activity leads students through derivations of the equations associated with radiometric dating.

Surface Water Hydrology part of Quantitative Skills:Activity Collection
William Locke - Montana State University - Bozeman, MT Related Links Floods and Flooding Recurrence Intervals
This problem set/lab exercise deals with surface water hydrology, specifically the local nature of stream runoff.

Back-of-the-Envelope Calculations: Size of Olympus Mons part of Quantitative Skills:Activity Collection
Barb Tewksbury, Hamilton College
Question A picture-perfect strato-volcano such as Fujiyama in Japan is what comes to mind when most people think of a volcano. Mt. Fuji is an imposing volcanic construct, rising from nearly sea level to a summit at ...

Back-of-the-Envelope Calculations: Position and Dimensions of the Moon part of Quantitative Skills:Activity Collection
Barb Tewksbury, Hamilton College
Question Suppose you could scale the Earth down to the size of your head. At that scale, how big would the Moon be, and how far away would it be from your head?

Back-of-the-Envelope Calculations: Communication with Mars part of Quantitative Skills:Activity Collection
Barb Tewksbury, Hamilton College
Question Suppose you were living in a Mars colony, and you wanted to call home to your parents on Earth. You say, "Hello! How are you?" How long do you have to wait until you hear them say, ...