Half of Half
Half of Half
Half of Half
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Activity<br />
Step 2: Repeat Step 1 until one or no coins remain in the shoe box. Record the number <strong>of</strong> pennies<br />
removed each time in the table.<br />
Step 3: Add the total the total number number <strong>of</strong> coins removed to find the original number <strong>of</strong> coin.<br />
Now subtract the number <strong>of</strong> <strong>of</strong> coins removed each time from the total to find the coins remaining after<br />
each shake.<br />
Step 4: Graph the Coins Remaining vs. Number <strong>of</strong> Shakes. Plot the data and draw a smooth line that<br />
best fit the points.<br />
Summing up:<br />
1. What is the interpretation <strong>of</strong> the graph you obtained?<br />
2. About what percent <strong>of</strong> the reaming coins were removed on each shake and why?<br />
3. Each shake represents a half-life for the coins. What is meant by half-life?<br />
2
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