Activity
Exploratorium

Exploratorium: Science Snacks: Radioactive Decay Model

For Students 9th - 10th
A simple experiment where pennies are thrown, then half are removed, to simulate how radioactive decay works.
Lesson Plan
Science and Mathematics Initiative for Learning Enhancement (SMILE)

Smile: Radioactive Decay:half Life

For Teachers 9th - 10th
An experiment that will help students in determining the half-life of a radioactive element.
Activity
Exploratorium

Exploratorium: Radioactive Decay Model

For Students 9th - 10th
Substitute coins for radiation. A coin experiment using radioactive decay.
Interactive
University of Colorado

University of Colorado: Ph Et Interactive Simulations: Alpha Decay

For Students 9th - 10th
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.
Article
University of Hawai'i

Univ. Of Hawaii: The Effects of Gamma Rays on Mars Rocks

For Students 9th - 10th
This site from the University of Hawaii describes the results of experiments to use gamma rays to sterilize rocks from outer space.
Interactive
Walter Fendt

Walter Fendt: Apps Zur Physik

For Students 9th - 10th
This site, in German, offers numerous apps that illustrate common physics principles. Apps are organized into categories: mechanics, oscillations and waves, electrodynamics, optics, thermodynamics, the theory of relativity, physics of...