Earthquake Demonstration part of Examples
This demonstration uses an "earthquake machine" constructed from bricks, sand paper, and a winch, to simulate the buildup of elastic strain energy prior to a seismic event and the release of that energy during an earthquake.

Crystallization from Melt Demonstration part of Examples
This demonstration uses melted phenyl salicylate to show how crystals nucleate and grow as the temperature of the liquid melt decreases.

Law of Diminishing Marginal Returns part of Examples
An ILD to help demonstrate the Law of Diminishing Marginal Returns using an experiment.

Law of Diminishing Marginal Returns part of Examples
An ILD to help demonstrate the Law of Diminishing Marginal Returns using an experiment.

The unemployment rate for the class part of Examples
After predicting what the unemployment rate will be for students in the class, a confidential survey modeled on the Current Population Survey questions is used to gather data about each student's employment. Students use this data to measure the class unemployment rate and then assess its accuracy.

Igneous Rocks Model part of Examples
While working in groups to facilitate peer tutoring, students use samples of four igneous rocks (gabbro, basalt, granite, and rhyolite) to observe differences in texture, color and grain size and make inferences ...

Using Lab Measurements to Determine the Feasibility of a Photovoltaic Panel part of Integrate:Workshops and Webinars:Systems, Society, Sustainability and the Geosciences:Activities
Using Lab Measurements to determine the power output of a solar module and the economic feasibility of photovoltaic panels

Subduction Zone Earthquakes part of Examples
While working in groups to facilitate peer tutoring, students manipulate a hands-on, physical model to better comprehend several characteristics of subduction zone earthquakes.

Buoyancy and Archimedes Principle part of Examples
Summary Buoyancy is based on Archimedes' Principle which states that the buoyant force acting upward on an object completely or partially immersed in a fluid equals the weight of the fluid displaced by the ...

Using Popcorn to Simulate Radioactive Decay part of Quantitative Skills:Activity Collection
Popping popcorn in your class is an excellent way to illustrate both the spontaneity and irreversible change associated with radioactive decay. It helps students to understand the unpredictability of decay.