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Milton J. Rubenstein Museum: Determining the Age of Rocks and Fossils [Pdf]
This set of activities from the Milton J. Rubenstein Museum of Science & Technology has students investigating how relative dating and absolute dating methods are used to determine the age of rocks and fossils.
University of Michigan
University of Michigan: Radioactivity in Nature
An interesting essay about the prevalence of radioactivity in nature, with chart showing where it is found and information about half lives.
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Alpha Decay
Via this interactive SIMS experiment, students will grasp better understanding of decay in alpha particles and their relationship to half life. Lessons and teacher tips included.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Radioactive Decay:half Life
An experiment that will help students in determining the half-life of a radioactive element.
University of Colorado
University of Colorado: Physics 2000: Beta Decay
An interactive turtorial on beta decay. Very readable and has a little extra for the advanced student.
University of Colorado
University of Colorado: Physics 2000: Halflife
An interactive tutorial on half life. Very readable and has a little extra for the advanced student.
Math Medics
S.o.s. Math: Radioactive Decay
This lesson gives examples of how first order differentials apply to radioactive decay.
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...
National Health Museum
Access Excellence: Teaching Radioactive Decay
This is a lesson plan involving the simulation of the radioactive decay of an imaginary substance.
Other
Cal State: Half Life a Useful Concept
A visual description of the concept of half life. Complete with an interactive graph.
Exploratorium
Exploratorium: Science Snacks: Radioactive Decay Model
A simple experiment where pennies are thrown, then half are removed, to simulate how radioactive decay works.
CK-12 Foundation
Ck 12: Earth Science: Radioactive Decay as a Measure of Age
[Free Registration/Login may be required to access all resource tools.] An overview of radioactive decay.
CK-12 Foundation
Ck 12: Earth Science: Radioactive Decay as a Measure of Age
[Free Registration/Login may be required to access all resource tools.] An overview of radioactive decay.
CK-12 Foundation
Ck 12: Earth Science: Radiometric Dating
[Free Registration/Login may be required to access all resource tools.] How scientists can use radioactive decay to find the age of certain materials.
American Geosciences Institute
American Geosciences Institute: Earth Science Week: Geologic Age
Explore geologic time of the Earth and learn how radioactive decay helps to establish a timeline.
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: Physical Science: Radioactive Half Life
[Free Registration/Login may be required to access all resource tools.] The half-life of a radioisotope, rates of radioactive decay and variation in half-lives in different radioisotopes.
CK-12 Foundation
Ck 12: Physical Science: Alpha Decay
[Free Registration/Login may be required to access all resource tools.] How and why alpha decay occurs, its dangers and how to write a balanced nuclear equation for alpha decay.
CK-12 Foundation
Ck 12: Physical Science: Beta Decay
[Free Registration/Login may be required to access all resource tools.] How and why beta decay occurs, its dangers, beta-minus and beta-plus decay and how to write a balanced nuclear equation for beta decay.
CK-12 Foundation
Ck 12: Physical Science: Gamma Decay
[Free Registration/Login may be required to access all resource tools.] Explains how and why gamma decay occurs, what gamma rays are, and why gamma radiation is the most harmful.
Chem4kids
Chem4 Kids: Atoms: Neutrons
Students will find an explanation of the neutron particle located inside the atom's nucleus. Website also defines isotopes and the process of radioactive decay.
Soft Schools
Soft Schools: Radioactivity Quiz
Take an interactive quiz over radioactivity. After completing the quiz, check your score, and then revisit any incorrect question for further review.
American Geosciences Institute
American Geosciences Institute: Earth Science Week: Dating Popcorn
In this activity, students use popcorn to simulate the process scientists use to date layers in an ice core.
Cool Math
Coolmath: Radioactive Decay 1
This Algebra Cruncher generates an endless number of practice problems for radioactive decay -- with solutions! Find how much will be left after a given amount of time.