Half-life:

Here is an experiment for demonstrating radioactive decay and half-life.
1.Get a packet of M&Ms (they only have an M on one side)
2.Count the M&Ms.
3.Place them in a beaker, shake and pour out onto a plate.
4.Remove the M&Ms that land face-up. These have decayed and need to be eaten immediately.
5.Count the remaining number of M&Ms.
6.Repeat steps 3 to 5 until finished.
7.Plot a graph of the remaining M&Ms and marvel at the shape of the best decay curve you have ever seen.
Beats Uranyl Nitrate!

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