13. DESIGN MATRIX RUBRIC TOTAL: 16/18 Grading Scale 3 points Extremely detailed description of each element of the scale. 2 points Partially detailed description of each element of the scale. 1 point Minimum amount of detail describing each element of the scale. 0 points No description of each element of the scale. Materials Used numerous recyclable materials. Used many recyclable materials. Used some recyclable materials. Used no recyclable materials. Durability Able to withstand any kind of terrain. Able to withstand some terrain. Able to withstand a couple or no type of terrain. Cannot withstand any type of terrain. Stability Very stable; able to stand with no problem. Somewhat stable; kind of flimsy. Flops over. Not stable whatsoever. Availability Can get all the materials stated easily. Can get some of the materials stated easily. Can get a few materials stated. Can get none of the materials stated easily. Comfort Extremely comfortable. Somewhat comfortable. Slightly uncomfortable. Not comfortable at all. Space Plenty of room to move feet. Some room to move feet. Little or no room to move feet. Not able to move feet at all; uncomfortable.