I thought - let's get a lettle geometry into Christmas. My sixth grade class is familiar with some basics terms and shapes, and my seventh grade class is more advanced. I started out with a rectangular red piece of construction paper (12" x 18") and told the children to draw the largest circle they could using their compass. They clearly marked the center of their circle. Next, we cut the circle out and talked about the parts of a circle. We then folded the outer part of the circle to the center three times in order to give our Santa some firmness. Then, we talked about the equilateral triangle we had, and I made sure they knew what the vertex was. We then proceeded to fold each vertex to the midpoint of the opposite side and all of a sudden they discovered we had a triangular pyramid. We discussed this figure and identified vertices, faces, and edges. Now, the real fun begins. We used a hole puncher to make three holes about two cm below each vertex of the initial equilateral triangle. The children then drew a small triangle with white chalk on a select face of the figure. On this white part we glued two moveable eyes and drew a red nose. From cotton puffs we trimmed Santa's hat, gave him a beard, mustache, and a pom pom on his cap. Lastly, we put ribbon through the three holes and we had our triangular pyramid again and our finished Santa. I have more folds to this basic pattern, so I'll post them at a later date. I hope this is useful to someone.