Model Accuracy  | 20: The number of protons, neutrons and electrons are correct. | 18: There is an error in ONE of the atom particle totals | 15: There is an error in TWO of the atom particle totals. | 11: All three atom particle totals are incorrect.
Design/Materials  | 20: Well constructed, neat, demonstrates creative use of materials, and is a reasonable size (12 in or less in diameter). | 18: Generally well constructed (but not neat), creative use of materials, and is reasonable size (up to 14 in. in diameter). | 15: Construction, OR use of materials, OR size does not meet expectations. | 11: Overall failure to meet expectations; haphazard material use and lack of effort is evident
Color Key Accuracy  | 10: The color key is easy to read, clearly identified, and all parts are present and correct. | 7: Key is easy to read, clearly identified, with 1 error in the required information. | 5: Key generally easy to read, clearly identified with 2-3 errors in the required information. | 3: Key difficult to read, is not clearly identified, or contains 5 or more information errors
Total Points | 50 |  |  |