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Examples of Teaching with Demonstrations


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M&M Model for Radioactive Decay part of Quantitative Skills:Activity Collection
A tasty in-class demonstration of radioactive decay using two colors of M&M's. Illustrates the quantitative concepts of probability and exponential decay. This activity is appropriate for small classes (<40 students).

Subject: Geoscience:Geology:Historical Geology

Resolving Force Vectors: Interactive Demonstration part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples
This is an Interactive Lecture Demonstration for resolving force vectors using the suspended block demonstration (1J30.10).

Subject: Physics:Classical Mechanics

Plate Kinematics part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples
While working in groups to facilitate peer tutoring, students manipulate a hands-on, physical model to better comprehend the dynamics of plate kinematics.

Subject: Geoscience:Geology:Tectonics

Presenting the Geologic Timescale part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples
This project has students model the geologic timescale using distance as a metaphor for time. Students give presentions spaced at distances which represent how far apart in time the events occurred.

Subject: Geoscience:Geology:Historical Geology

Adhesion, Cohesion, and Surface Tension Demonstration part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples
This short (<5-10 minutes) pair of demonstrations uses glass slides with a very thin film of water to demonstrate the cohesive and adhesive forces of water molecules, and a needle floating on water to demonstrate surface tension.

Subject: Geoscience:Hydrology

Pressure Melting of Ice: While-U-Wait part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples
In this demonstration, students get to witness pressure melting and regelation first-hand. A weight is suspended via a thin wire over an ice cube. Over the course of the course of the demonstration, the wire passess through the ice, leaving undamaged ice in its wake.

Subject: Physics, Geoscience:Hydrology

Crystallization from Melt Demonstration part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples
This demonstration uses melted phenyl salicylate to show how crystals nucleate and grow as the temperature of the liquid melt decreases.

Subject: Geoscience:Geology:Igneous and Metamorphic Petrology:Igneous Processes, Geoscience:Geology:Mineralogy:Crystal Chemistry

Water Contamination Demonstration part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples
Summary: Misplaced Matter and Water Pollution The drinking water pollution demonstration provides a very simple but dramatic way to get students to think about water contamination and drinking water standards, ...

Subject: Geoscience:Hydrology

Image Maps part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples

The Elliptic Orbit part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples
Planet motion around a star - introductory activity with interesting animation. The activity allows the student to revile the connection between the kinematics of planet and energy of the planet along the orbit.