SchoolArts Magazine

March 2018

SchoolArts is a national art education magazine committed to promoting excellence, advocacy, and professional support for educators in the visual arts since 1901.

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Page 31 of 66

2" SCHOOLARTSMAGAZINE.COM 27 cise cutting, measuring, and folding, trihexaflexagons are easy to create, and the design possibilities are endless. And a bonus: You will be introducing oodles of math vocabulary, making this a great STEAM project. Marking and Measuring To prepare, measure and carefully cut lightweight tag board or other heavy paper into 3 ½ x 22" (9 x 56 cm) s trips. Use a paper cutter, as a ccuracy is critical. You'll also nee d c lear tape, rulers, and pencils. First, make sure your students understand that the end of the ruler is not at the zero. There is extra space on the end of the ruler; all measuring must begin with the zero for accuracy. I call this "zeroing the ruler." Distribute strips to students and have them make tiny marks on the paper's edge, marking off the top of the strip, from left to right, in 4" (10 cm) intervals, leaving 2" (5 cm) at the end. Mark the bottom of the strip, again moving left to right, beginning with a 2" segment and then continuing to the end with 4" intervals. Next, using the ruler, begin at a corner and connect the marks diago - nally, ending at the opposite corner. Y ou will end up with a right triangle at each end of the paper, and ten equi- lateral triangles in between. To create s traight lines, make sure your students know how to hold their rulers steady. I recommend holding the hand arched over the ruler, creating two points of contact. When this step is complete, cut off the right triangle at each end of the strip with scissors. Students are almost ready to assemble their trihexaflexagons, but first they must score the lines to cre- ate clean, sharp folds. Holding the ruler steady against the lines, gently score using a pointed wooden stick or the point of a pair of open scissors. Once the lines are all scored, fold and crease them back and forth. Folding the Trihexaflexagon 1. Count three triangles from the left and fold them to the back. 2. Count the next three triangles, then fold the other end of the paper to the front. With precise cutting, measuring, and folding, trihexaflexagons are eas to create, and the design possibilities are endless. 4" 4" 4" 4" 2" 4" 4" 4" 4" 4" 4" 2 CONTINUED ON PAGE 58. Only two faces of a trihexaflexagon can be exposed at any time—the third is buried inside. Use this diagram as a reference when marking the paper strips for your trihexaflexagons.

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