Helping students see beyond Calculus
    David Strong, Pepperdine University

An introduction to Linear Algebra
    David Strong, Pepperdine University

Systems of Equations as Matrices and Hill Cipher   Modulo Worksheet   Cipher Worksheet
    Annela R Kelly, Bridgewater State University

Spanning and weighted spanning trees: a different kind of optimization
    sarah-marie belcastro, MathILy (serious Mathematics Infused with Levity)

Music and the Symmetry Group of the Dodecagon
    Philip Joseph Lombardo, St. Joseph's College of New York

Investigating the mathematics of folding regular-polygon-base boxes
    Tamara B Veenstra, University of Redlands

Applications of Derivatives to Image Processing within a Calculus Course
    Yevgeniy V. Galperin, East Stroudsburg University of Pennsylvania

Connecting STE to M (also see here)
    Robert R Rogers, State University of New York at Fredonia

Teaching with a Smile
    Igor V. Minevich, Boston College

Shortest paths, soap films, and mathematics
    Michael Dorff, Brigham Young University