The Evolution of Pearson’s Correlation Coefficient/Exploring Relationships between Two Quantitative Variables
Gary Kader, Appalachian State University
The evolution of ideas is often ignored in the teaching of statistics. It is important to show students how definitions and formulas evolve. This activity describes a fairly straightforward activity of how measures of association can evolve.

Introduction to hydrologic model calibration
Matin Rahnamay Naeini, University of California-Irvine
In this exercise, we introduce the concept of model calibration for rainfall-runoff models. We specifically employ a synthetic precipitation data as input to the hydrologic model to generate synthetic runoff. The ...

Investigating Natural Selection: Observing Stabilizing and Directional Selection through Graphical Analysis of Population Samples.
John Haug
This lab activity demonstrates the difference between stabilizing and directional natural selection using two separate populations of sunflower seeds.