<p>Tristan Oberwegner, 11, whose mother is one of the camp teachers, builds his tower-prism.</p>
June 26, 2014
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June 26, 2014 8:12 a.m.
<p>Tristan Oberwegner, 11, whose mother is one of the camp teachers, builds his tower-prism.</p>
June 26, 2014