Added: Eusebio Fritsch - Date: 31.08.2021 18:38 - Views: 32976 - Clicks: 3505
In this activity, students gain a better understanding of radioactive dating and half-lives. Parent isotopes are represented by the M side up radioactive. Daughter isotopes are represented by the M side down stable.
They then set aside stable isotopes During each trial, students record the of radioactive parent isotopes and record this in a data table. Once all groups finish, each group records their info on the class decay table on the board and we calculate the averages of the class. Once this info Radiometric dating for middle school calculated, students create a graph comparing the class average of parent isotopes to the of half-lives.
Your. Paul Junior High School. Summary In this activity, students gain a better understanding of radioactive dating and half-lives. Goals: 1. Students will be able to explain what a half-life of a rock is. Students will have a more in-depth understanding of what radioactive decay is. Students will understand how scientists use half-lives to date the age of rocks. Skills: -critical thinking -data analysis -questioning -graphing and data collecting Vocab Words: 1. Relative Dating 2. Radioactive Dating 3. Half-Lives 4. This activity can be adapted for older students, but is used in an 8th grade earth science classroom.
Class size can vary, but activity should be done in groups of Students should have the skill to set up a data table and a graph, however, if you want to use this activity with students that have not, you can provide them a template with that information. As far as mastery of content, this activity is done in our rocks and minerals unit.
Students should have some prior knowledge of rocks and how they are dated. This activity would also be easy to adapt when talking about half-lives within a chemistry course. Time Needed: Appx. 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 Radiometric dating for middle school 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. Students should recognize each time the should go down by appx half. Then students take the class data and create a graph comparing the of parent isotopes to the of half-lives.
Once this is done, students have some post questions they are given that they should record in their science notebook. The first post question caused some confusion: Why didn't each group get the same ? A lot of the students said because they shook the containers differently This was a new activity we implemented last tear.
Radioactive decay and half-lives can be a very difficult concept for our 8th graders to grasp.
They not only enjoyed this activity, but they really gained a better understanding of it as well. I have attached my rubric, this is what I use for assessment. Students graph, post questions, and data table will be looked at.Radiometric dating for middle school
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Radiometric dating facts for kids