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1. 

   Zakaria Ali Khamis

   https://stemedhub.org/members/7769

2. Model Ecosystem Video

   out of 5 stars 

   04 Oct 2012 | Contributor(s):: David C Eichinger, James Daniel Lehman

   In this video, Professor David Eichinger discusses a model ecosystem activity that is used in Biology for Elementary Teachers and is applicable to the elementary classroom.