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University of Rochester: Exponential Decay
A detailed and comprehensive site explaining exponential decay. Includes formulas and many examples.
Concord Consortium
Concord Consortium: Exponential Decay
Learn about exponential decay in real-world situations. Problems involve the application of depreciation of an asset and radioactive decay. Learn to apply exponential decay equations and interpret graphs.
CK-12 Foundation
Ck 12: Algebra: Exponential Decay
[Free Registration/Login may be required to access all resource tools.] Learn about exponential decay functions.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Exponential Decay
Find a quick, concise explanation of exponential decay in several different settings. An example is given and clearly explained for each of those settings.
CK-12 Foundation
Ck 12: Algebra: Exponential Decay
[Free Registration/Login may be required to access all resource tools.] This lesson covers how to analyze and graph exponential decay functions.
CK-12 Foundation
Ck 12: Algebra Ii: 3.11 Modeling With Exponential Decay and Log Functions
This lesson continues exploring the process for modeling real world scenarios by writing and solving exponential and logarithmic functions. It also covers how to create and interpret graphs of such functions.
Texas Instruments
Texas Instruments: Modeling Exponential Decay With a Look at Asymptotes
Students use sample data to approximate models with the Transformation Graphing Application. They are introduced to the idea of discrete data sets being used with continuous function models. They also identify non-zero asymptote form of...
CK-12 Foundation
Ck 12: Algebra: Exponential Decay
[Free Registration/Login may be required to access all resource tools.] Developing exponential decay models with Algebra
Texas Instruments
Texas Instruments: M&m's and Decay Graphs
Observe exponential decay with the classic M&M lab, here written up and ready to go. At the end, the author intends for students to send equations and data to the teacher via TI-Navigator, but this step can done on paper if the...
Other
Wpi: Exponential Decay and Effective Medicine Dosage
This site is an example of the use of exponential decay. The example involves the effectiveness of a medical dosage over time.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Exponential Decay and Growth
Eleven problems present a variety of problems working with various aspects of exponential decay and growth. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click...
CK-12 Foundation
Ck 12: Algebra: Exponential Growth and Decay
[Free Registration/Login may be required to access all resource tools.] Distinguish between exponential growth and exponential decay.
Sophia Learning
Sophia: Exponential Growth and Decay
The tutorial explores exponential growth and decay. Definitions, formulas, and example problems are included in the learning resource.
Science Education Resource Center at Carleton College
Serc: Teaching Radioactive Decay & Radiometric Dating
A laboratory activity that teaches the difficult concept of radioactive decay by means of a fluid (shampoo) flowing through holes from an upper to a lower beaker. Using the exponential decay equation, students then 'date' the shampoo....
Texas Instruments
Texas Instruments: Pearson Prentice Hall Algebra 2: Exploring Exponential Models
Students will model exponential growth and model exponential decay. Students will make a visual choice of an appropriate model and then use the Transformation Graphing App to confirm their choice.
University of Saskatchewan (Canada)
University of Saskatchewan: Modeling Exponential Decay Using Logarithms
Radioactive decay is a real-life example of exponential decay. This site solves an example problem by using the exponential decay equation.
Wolfram Research
Wolfram Math World: Exponential Decay
MathWorld provides the equation for exponential decay and an explanation of the variables of the equation.
University of Guelph
University of Guelph: Physics Tutorials: Exponential Growth and Decay
Good site explaining exponential growth and decay, with questions for students to test themselves.
Khan Academy
Khan Academy: Graphing Exponential Growth & Decay
Graph exponential functions. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Vision Learning
Visionlearning: Exponential Equations in Science: Constant E, Limits to Growth
An introduction to exponential equations that describe growth and decay over time. Variables and constants in the equation are explained.
Other
Arlington Public Schools: Graphing Exponential Functions [Pdf]
Students are given examples of graphing exponential functions as well as the difference between exponential growth versus exponential decay graphs.
Texas Instruments
Texas Instruments: Numb3 Rs: A Matter of Half Life and Death
Based off of the hit television show NUMB3RS, this lesson introduces students to the topic of exponential decay and half-life. The lesson is built around Cesium-137, a radioactive isotope, and it's declining radioactivity over the course...
Texas Instruments
Texas Instruments: Numb3 Rs How to Get a Date for Episode
Students will learn how to estimate time of death by using a lab that models carbon dating and radioactive decay. Activity pages complete with calculator keystroke instructions and screenprints are included in this lesson plan based on...
Oregon State University
Calculus Quest: Exponential Functions
This CalculusQuest site provides a basic introduction to exponential functions, covering the laws of exponents and exponential growth and decay. At the bottom of the page are links to exponential equations, exercises, and the...
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