Radioactive dating lesson middle school
On a process level, the student will be using the scientific method to test and observe the pattern of the coin sample and extrapolate the” half life “of the coin sample from the obtained data.Hopefully, the result is a clear- cut operational concept of the half- life of radioactive substances.Half lives can be as short as milliseconds and as long as billions of years.For example, were we to examine lead-214, we would find a half life of 27 minutes.
First, students visualized the concepts of radioactive decay and half-life in an activity using M&Ms™ and marshmallows.Students reported that their knowledge was enhanced and their misconceptions were addressed.Some commented specifically that food made the activity more accessible on a sensory level. 131© Copyright 2010 The Geological Society of America (GSA), all rights reserved.Later, students applied this knowledge to determine the ages of a series of rocks and organic remains represented by bags of Froot Loops™.Various colors were used to indicate parent and daughter isotopes of several elements with different half-lives.
A coin has a 50 percent chance of showing heads, so in any round we would expect approximately half the coins to show heads.