The fifth-graders were challenged with another STEM activity called How Strong is A Piece of Paper? The challenge: students had to create a triangular, square, and circular column. Then, standing the tower upright, books were placed on top of the columns. The object of the activity was to find out which column could hold the most weight. The students discovered that the circular column held the most book. After the activity, the classes discussed the use of support columns in building structures.