Mossy Head Students Participate in Christmas Tree STEM Challenge! Dec 08 2017 Mrs. Cook’s third grade class participated in a festive Christmas tree STEM challenge. Students worked in teams to create the tallest Christmas tree using gumdrops and toothpicks. Submitted by Elizabeth Gaither Permalink: https://www.walton.k12.fl.us/2017/12/mossy-head-students-participate-in-christmas-tree-stem-challenge