This Word Wall Coloring set includes the Simple Machine vocabulary: simple machine, inclined plane, lever, pulley, screw, wedge, wheel & axle.Coloring pages have recently become a huge hit all over the world. In my new series of word wall coloring pages, you can bring the excitement of coloring into your middle school and high school science classrooms. Word Walls are an instructional tool used primarily in an elementary classroom. While teaching in Texas my administrators decided they wante