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They will only re shake the radioactive M&Ms each time. Once they are finished with their 8 runs, they will record their data on the class data table (which can be on the board).Once all groups data is on the table, you can calculate the average for each run (1-8) and determine a class average. Students use M&Ms to demonstrate the idea of radioactive decay. Parent isotopes are represented by the M side up (radioactive).
Students begin by pouring the 100 M&Ms on the table, and set aside the "stable" isotopes (M side down).
You may already be familiar with radiation used in your every day life: x-rays at the dental office or hospital, radiation therapy to treat cancer, or exit signs and smoke detectors, which contain a small amount of radiation.
Radiation is everywhere – we are constantly exposed to radiation from the sun.
I tell the students that they will now become archaeologists as they play with the Ph ET simulation "Radioactive Dating Game".
I ask the students to divide themselves into partners, and request that one partner to get a computer, while the second partner gets the record sheet they will use.