The exercise they will go through of working backwards from measurements to age should help them understand how scientists use carbon dating to try to determine the age of fossils and other materials.
To be able to do this lesson and understand the idea of half-life, students should understand ratios and the multiplication of fractions, and be somewhat comfortable with probability.
"Carbon-14 undergoes beta decay with a half-life of 5720 years.
The element carbon is an essential element in all living matter.
The second lesson, Radioactive Decay: A Sweet Simulation of Half-life, introduces the idea of half-life.
By the end of the 8th grade, students should know that all matter is made up of atoms, which are far too small to see directly through a microscope.
You may group them in any size group, but working in pairs is optimal for this exercise.
On a separate sheet of paper, immediately record the volume of Frosty's melted remains (water) in your graduated cylinder and note the time on the clock.You can continue to fill the funnels as different classes arrive.Empty the graduated cylinders between classes if the volume is more than about 25 ml.You can refer to How Carbon-14 Dating Works, from How Stuff Works, to help you answer the question.When it comes to dating archaeological samples, several timescale problems arise.