+ largely done
x done partially or with substantial errors, or not done but contains good ideas
0 largely not done, or serious errors
- not submitted
 

    HW 1 2 3 4 5 6 7
Daniel + + x + x + x
Darina x x x x 0 0 x
Haoran + + x + 0 + 0
Maria  + 0 x + x + x
Milan  + + x - - - -