This lab uses M&M candies to simulate half-life. Students will need calculators and a method of shaking the candies. I use a Dixie cup, usually. Whichever candies land "m" side down are viewed as decayed. Students take data and graph their results to find the characteristic shape found in all half-life studies.
My labs are straightforward. Some of them are paper labs, but the ones that involve significant laboratory setup or calculations to be made on the part of the teacher are written about in a Teacher Notes section at the end of those particular labs. I use relatively safe and inexpensive chemicals. Of course, safety precautions are always noted at the beginning of the lab.
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Science Education by Joshua Wickline is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 United States License