New information needed to be introduced with parent and daughter isotopes. Once students are in their groups, with supplies, and general directions are given, they are on their own for doing their runs. They will do this 8 times. 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 and determine a class average.
Powerpoint introduction Powerpoint introduction is attached. Each pair of students will receive a baggie with some ratio of one thing to another, for instance, 20 white beans and 30 red beans, or 45 screws and 27 washers. Background for Teachers Basic understanding of how radiometric dating works is useful. Student Prior Knowledge The students should know how absolute dating differs from relative dating, and should have some perspective on why absolute dating is important in dating the earth. Intended Learning Outcomes 3.
Frosty the Snowman Meets His Demise: An Analogy to Carbon Dating
Like this lesson Share Have you ever seen an ancient ruin and wondered how old it is? In this lesson, you will learn about how scientists estimate the age of things when they are not sure using predictable decay rates. We will discover what a half life is and why it is important! Ancient Ruins and Old Bones Are you curious how old dinosaur bones really are and how scientists figure out their age?
Purpose To develop the idea that carbon dating is based on gathering evidence in the present and extrapolating it to the past. Students will use a simple graph to extrapolate data to its starting point. Context This lesson is the third in a three-part series about the nucleus, isotopes, and radioactive decay. The first lesson, Isotopes of Pennies , deals with isotopes and atomic mass.