# Examples of Teaching with Demonstrations

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Introduction to Torques: A Question of Balance, Featuring the Sledge Hammer of the Sierra Madre part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples

Interactive Lecture Demonstrations to illustrate the nature of torques and on the balancing of torques in static equilibrium.

Understanding the Work Energy Theorem: In the lab or as lecture demonstration part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples

This series of questions before instruction, in-class peer instruction as students come to understanding, and visualization of an important mathematical relationship allow students to iterate and improve their understanding of work incrementally.

Experiment Problem in Kinematics: How Much Does it Take to Win the Race? part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples

In this activity, students are presented with two objects that have different constant speeds and that will race each other. The students must determine which object will win the race, as well as either how much time elapses between the objects crossing the finish line.

Elastic and Inelastic Collisions: The Case of the Happy and Sad Balls part of Pedagogy in Action:Library:Interactive Lecture Demonstrations:Examples

Interactive Lecture Demonstration to illustrate that impulses are larger in elastic collisions than in inelastic collisions if other factors are the same.

Helping Students Discover Total Internal Reflection part of Pedagogy in Action:Library:Interactive Lectures:Examples

Students learn the basic relationship of Snell's Law, practice applying it to a situation, then are given another situation where it "doesn't work."??? This situation turns out to be one in which total internal reflection occurs. Students are then shown what happens with classroom apparatus.

Vectors: Lifting a Bowling Ball part of MnSCU Partnership:PKAL-MnSCU Activities

Compare lifting a bowling ball directly (one small person) to lifting a bowling ball at an angle with two people holding the ends of a rope and the ball hooked to the middle of the rope.

Thermohaline Circulation Demonstration part of Cutting Edge:Oceanography:Activities

This activity helps the students to visualize the effects of temperature and salinity on water density, and the resulting thermohaline circulation. Important processes visualized in this demonstration are ...

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.

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).

The nature of volcanism as controlled by viscosity part of Cutting Edge:Courses:Petrology:Teaching Examples

This activity is fun to include in a classroom. This activity has the students design demonstrations using ketchup and peanut butter to document how viscosity differences between rhyolite and basalt control various ...