Students determine the coefficient of restitution (or the elasticity) for super balls. Working in pairs, they drop balls from a meter height and determine how high they bounce. They measure, record and repeat the process to gather data to calculate average bounce heights and coefficients of elasticity. Then they extrapolate to determine the height the ball would bounce if dropped from much higher heights.

Elasticities can be calculated for more than just price elasticity of supply or price elasticity of demand. For example, income elasticity of demand as a measure of how quantity demanded changes in response to income.

Economists use the concept of price elasticity of demand to describe how the quantity demanded changes in response to a price change. In this video, explore a simple way to calculate the price elasticity of demand, how to interpret that calculation, and how price elasticity of demand varies along a demand curve.

We can calculate the price elasticity of supply to gauge how sensitive percent changes in quantity supplied are to percent changes in price.

This 6 minute video will examine how business firms maximize profit in a competitive market and their role in setting prices for their good / service. This video will enforce the standard EPF. 2 (e) and (h)

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Glioblastoma (GBM), an aggressive cancer in the brain or spinal cord, is a devastating diagnosis. Although therapies exist, GBM has a poor prognosis, with a median survival of only 14-15 months after diagnosis. Key to its aggressiveness is the degree to which migrating GBM cells infiltrate adjacent brain tissue. GBM cells express the protein MACC1, which is a marker of metastasis and tumor cell migration. Unfortunately, how GBM cells learn to migrate is unclear. A recent study used live-cell and atomic force microscopy to evaluate cell migration and mechanical properties of GBM cells overexpressing MACC1. The results showed that MACC1 increased the migratory speed and elasticity of GBM cells while it decreased cell-cell adhesion and inhibited aggregation. MACC1-overexpressing cells also had specific increases in protrusive actin, allowing the cells to adhere to laminin..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

Here we will learn about the mechanical behavior of structures and materials, from the continuum description of properties to the atomistic and molecular mechanisms that confer those properties to all materials. We will cover elastic and plastic deformation, creep, fracture and fatigue of materials including crystalline and amorphous metals, semiconductors, ceramics, and (bio)polymers, and will focus on the design and processing of materials from the atomic to the macroscale to achieve desired mechanical behavior. We will cover special topics in mechanical behavior for material systems of your choice, with reference to current research and publications.

Here we will learn about the mechanical behavior of structures and materials, from the continuum description of properties to the atomistic and molecular mechanisms that confer those properties to all materials. We will cover elastic and plastic deformation, creep, and fracture of materials including crystalline and amorphous metals, ceramics, and (bio)polymers, and will focus on the design and processing of materials from the atomic to the macroscale to achieve desired mechanical behavior. Integrated laboratories provide the opportunity to explore these concepts through hands-on experiments including instrumentation of pressure vessels, visualization of atomistic deformation in bubble rafts, nanoindentation, and uniaxial mechanical testing, as well as writing assignments to communicate these findings to either general scientific or nontechnical audiences.

This course provides an introduction to the mechanics of solids with applications to science and engineering. We emphasize the three essential features of all mechanics analyses, namely: (a) the geometry of the motion and/or deformation of the structure, and conditions of geometric fit, (b) the forces on and within structures and assemblages; and (c) the physical aspects of the structural system (including material properties) which quantify relations between the forces and motions/deformation.

After conducting the associated activity, students are introduced to the material behavior of elastic solids. Engineering stress and strain are defined and their importance in designing devices and systems is explained. How engineers measure, calculate and interpret properties of elastic materials is addressed. Students calculate stress, strain and modulus of elasticity, and learn about the typical engineering stress-strain diagram (graph) of an elastic material.

Looking a bit deeper at why elasticity changes despite having a linear demand curve. Created by Sal Khan.

In this video, take a deeper dive into the total revenue rule and the relationship between total revenue and elasticity. Created by Sal Khan.

Examining the two extremes of elasticity, perfectly elastic and perfectly inelastic demand, can help us beter understand the intuition behind this measure. Created by Sal Khan.

After a brief history of plastics, students look more closely as some examples from the abundant types of plastics found in our day-to-day lives. They are introduced to the mechanical properties of plastics, including their stress-strain relationships, which determine their suitability for different industrial and product applications. These physical properties enable plastics to be fabricated into a wide range of products. Students learn about the different roles that plastics play in our lives, Young's modulus, and the effects that plastics have on our environment. Then students act as industrial engineers, conducting tests to compare different plastics and performing a cost-benefit analysis to determine which are the most cost-effective for a given application, based on their costs and measured physical properties.

This interactive and collaborative activity asks students to first react to price changes and then analyze the results. Instructors can upload the materials to their own Google drives and run the experiment repeatedly to generate new data and demonstrate trends. This resource was developed by Birjees Ashraf, Sophie Haci, Renee Edwards, and Charles Hackner.

18.311 Principles of Continuum Applied Mathematics covers fundamental concepts in continuous applied mathematics, including applications from traffic flow, fluids, elasticity, granular flows, etc. The class also covers continuum limit; conservation laws, quasi-equilibrium; kinematic waves; characteristics, simple waves, shocks; diffusion (linear and nonlinear); numerical solution of wave equations; finite differences, consistency, stability; discrete and fast Fourier transforms; spectral methods; transforms and series (Fourier, Laplace). Additional topics may include sonic booms, Mach cone, caustics, lattices, dispersion, and group velocity.

Principles of Macroeconomics 2e covers the scope and sequence of most introductory economics courses. The text includes many current examples, which are handled in a politically equitable way. The outcome is a balanced approach to the theory and application of economics concepts. The second edition has been thoroughly revised to increase clarity, update data and current event impacts, and incorporate the feedback from many reviewers and adopters.Changes made in Principles of Macroeconomics 2e are described in the preface and the transition guide to help instructors transition to the second edition.