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Views: 25841 | Post Uploader: hamannx5 | Categories: Fisting A colorful geological map, preferably of your area on wall, or as an overhead color transparency. This lesson would probably fit best whenever the ages of fossils or rocks have been encountered, enabling students to readily understand the essentials for how they are dated. The pre- and post-test quizzes, ready to hand out optional A scaled time-line for the solar system around the classroom, if possible see our Time Machine lesson. By counting the parent radioactive atoms and knowing the "half-life" of those atoms, students can figure the number of half-lives since the sample solidified, and therefore the "age" of the sample.

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