Learn about different types of radiometric dating, such as carbon dating.Understand how decay and half life work to enable radiometric dating.The half-life of a radioactive isotope describes the amount of time that it takes half of the isotope in a sample to decay.
Teaching about Earth's history is a challenge for all teachers.
Time factors of millions and billions of years is difficult even for adults to comprehend.
Play a game that tests your ability to match the percentage of the dating element that remains to the age of the object.
Archaeologists use the exponential, radioactive decay of carbon 14 to estimate the death dates of organic material.
This lesson can be done in two, 45-minute class periods.
Founded in 2002 by Nobel Laureate Carl Wieman, the Ph ET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations.They need only know that such calculations are possible. 79.) In this lesson, students will be asked to simulate radioactive decay by pouring small candies, such as plain M&M's® or Skittles®, from a cup and counting which candies fall with their manufacturer's mark down or up.The exercise they will go through of predicting and successively counting the number of remaining "mark-side up" candies should help them understand that rates of decay of unstable nuclei can be measured; that the exact time that a certain nucleus will decay cannot be predicted; and that it takes a very large number of nuclei to find the rate of decay.The final lesson, Frosty the Snowman Meets His Demise: An Analogy to Carbon Dating, is based on gathering evidence in the present and extrapolating it to the past.To do this lesson and understand half-life and rates of radioactive decay, students should understand ratios and the multiplication of fractions, and be somewhat comfortable with probability.Basic understanding of how radiometric dating works is useful.