Geologic Time Calculations part of Quantitative Skills:Activity Collection
Radiometric age determination using parent/daughter composition and a radiometric decay curve.

Learning to Think about Gravity II: Aristotle to Einstein part of comPADRE Pedagogic Library:Interactive Lectures:Examples
The purpose of this exercise is to learn how to think about gravity, learn about scientific methodology, and transition from the Aristotelian to Newtonian to Einsteinian understanding of gravity. -

Rutherford's Model of the Atom part of comPADRE Pedagogic Library:Interactive Lectures:Examples
Students are asked think-pair-share questions to predict the interaction of alpha particles fired toward the nucleus of an atom. An online applet is used to illustrate the interaction and test students' ideas ...

Models of the Hydrogen Atom part of comPADRE Pedagogic Library:Interactive Lectures:Examples
In this interactive lecture, models of the hydrogen atom are explored using an online Java applet. The exploration leads to qualitative and quantitative analysis of energy transitions. -

The Standard Model: Using CERN output graphics to identify elementary particles part of comPADRE Pedagogic Library:Just in Time Teaching:Examples
After using the historical development of the Standard Model to develop introductory understanding, students link to OPAL and DELPHI data archives from CERN to identify and study the tracks from elementary particles.

Virtual Photoelectric Lab part of comPADRE Pedagogic Library:Teaching with Data Simulations:Examples
This is a virtual lab activity on the photoelectric effect based on a Java applet simulation of the experiment.