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Dear LOR user,

Thank you for being a big part of this community. To better support the initiatives around open educational resources in the state of Michigan, all resources on the Michigan Virtual Learning Object Repository (LOR) are being moved to #GoOpen Michigan on September 30th, 2018. During the transition, our LOR will be moved to an archived state, not allowing new user registration or new content to be added. An email with more details was sent to registered users of the LOR in September. To make use of the great resources on the platform, we encourage you to create an account and add your own new resources to the #GoOpen Michigan platform.



Apply scientific reasoning and evidence from ancient Earth materials meteorites and other planetary surfaces to construct an account of Earth's formation and early history.

Students will learn about the difference between relative and absolute dating. They will collect, graph and interpret data during the activity to understand what half-life is and how it is used to date materials.

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