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1. 

   Jonathan Stern

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2. 

   Sarah A Knutie

   https://qubeshub.org/community/members/1611

3. 

   Michelle Lewis

   https://qubeshub.org/community/members/1377

4. AIM-UP! Coal balls lesson

   out of 5 stars 

   28 Mar 2015 | | Contributor(s):: Monte Garroutte, Jordan Metzgar, Hirotsugu Mori

   This resource has been updated - find the current version here: https://qubeshub.org/publications/334In this activity, students learn about ancient plant life and climate change by examining coal balls. In addition to the lesson itself, information is provided on where to purchase coal ball...