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<?xml version="1.0"?>
    <allcategories accontinue="Hyperbolic_Tessellations" />
      <c size="6" pages="6" files="0" subcats="0" xml:space="preserve">Art and Perception Explorations</c>
      <c size="1" pages="1" files="0" subcats="0" xml:space="preserve">Duccio</c>
      <c size="0" pages="0" files="0" subcats="0" xml:space="preserve">Egyptian Mathematics Exploration</c>
      <c size="4" pages="4" files="0" subcats="0" xml:space="preserve">Egyptian Mathematics Explorations</c>
      <c size="164" pages="164" files="0" subcats="0" xml:space="preserve">Escher Artwork</c>
      <c size="11" pages="11" files="0" subcats="0" xml:space="preserve">Exercises</c>
      <c size="99" pages="92" files="0" subcats="7" xml:space="preserve">Exploration</c>
      <c size="0" pages="0" files="0" subcats="0" xml:space="preserve">Explorations</c>
      <c size="5" pages="5" files="0" subcats="0" xml:space="preserve">Fieldtrip</c>
      <c size="10" pages="10" files="0" subcats="0" xml:space="preserve">High School</c>