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Understand how decay and half life work to enable radiometric dating.

Play a game that tests your ability to match the percentage of the dating element that remains to the age of the object.

They then see some new vocabulary and get to practice applying it before closing out for the day.

Learn about different types of radiometric dating, such as carbon dating.

Sequencing the rock layers will show students how paleontologists use fossils to give relative dates to rock strata.

Once students begin to grasp "relative" dating, they can extend their knowledge of geologic time by exploring radiometric dating and developing a timeline of Earth's history.

Specific rock formations are indicative of a particular type of environment existing when the rock was being formed.

The study of fossils and the exploration of what they tell scientists about past climates and environments on Earth can be an interesting study for students of all ages.

Teaching about Earth's history is a challenge for all teachers.

By matching partial sequences, the truly oldest layers with fossils can be worked out.

By correlating fossils from various parts of the world, scientists are able to give relative ages to particular strata. Relative dating tells scientists if a rock layer is "older" or "younger" than another.

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