Table 1
Web-based Homework Systems
| MyMathLab | WeBWorK | |
|---|---|---|
| Publisher | Pearson | MAA |
| Problem Database | Specific to Textbook | 40,000+ Open Library |
| Problem Editor | No | Yes |
| Automatic Grading | Yes | Yes |
| LMS Interface | Yes | Yes |
| Cell Phone Logon | Yes | Yes |
| Cost | Not Free | Free |
| Help: Email Instructor | Yes | Yes |
| Help: Similar Problem | Yes | Yes1 |
| Help: Refer to Text | Yes | No |
| Help: Just In Time | Yes | Yes |
Table 2
Performance Means and P-Values
| CER | OER | P-Value | |
|---|---|---|---|
| Pre-Test | 8.40 | 8.43 | 0.965 |
| Login Day | 6.36 | 2.45 | 3.15E-05 |
| Exam 1 | 47.01 | 57.64 | 0.019 |
| Exam 2 | 71.59 | 71.60 | 0.998 |
| Exam 3 | 72.00 | 70.82 | 0.778 |
| Exam 4 (Final) | 80.34 | 75.35 | 0.212 |
| Homework | 81.63 | 72.35 | 0.055 |
| Post-Test | 7.70 | 7.38 | 0.639 |
| Course Average | 78.87 | 75.09 | 0.303 |
Table 3
Multilinear Regression Results with Probabilities
| Intercept (I) | Pre-Test (P) | Group (G) | Access Day (A) | Homework (H) | |
|---|---|---|---|---|---|
| Exam 1 | 21.899 | 3.539 (1.1e-11) | 6.603 (0.111) | -0.636 (0.074) | |
| 17.197 | 3.659 (5.8e-12) | 8.989 (0.022) | |||
| 26.109 | 3.526 (1.7e-11) | -0.840 (0.012) | |||
| 17.197 | 3.665 (1.1e-11) | 8.989 (0.022) | |||
| Exam 2 | 51.525 | 2.412 (1.3e-09) | 0.063 (0.984) | -0.245 (0.361) | |
| 50.462 | 2.456 (4.9e-10) | ||||
| Exam 3 | 58.904 | 1.939 (2.1e-04) | -4.4325 (0.307) | -0.522 (0.145) | |
| 53.690 | 2.021 (9.1e-05) | ||||
| Exam 4 | 35.018 | 1.633 (1.6e-04) | -4.979 (0.1682) | 0.091 (0.753) | 0.381 (5.1e-07) |
| 32.434 | 1.580 (2.4e-04) | 0.397 (7.5e-08) | |||
| 64.255 | 1.923 (7.1e-05) | -8.199 (0.0317) | |||
| Average | 66.622 | 1.739 (1.6e-04)) | --6.080 (0.112) | --0.480 (0.123) | |
| 61.131 | 1.782 (1.0e-04) |
Table 4
Multilinear Regression Models
| Exam 1 = 26.109 + 3.526*P - .840*A |
| Exam 1 = 47.014 + 10.628*G |
| Exam 1 = 56.127 - 0.949*A |
| Exam 2 = 50.462 + 2.456*P |
| Exam 3 = 53.690 + 2.021*P |
| Exam 4 = 32.434 + 1.580*P+ 0.397*H |
| Exam 4 = 64.255 + 1.923*P – 8.199*G |
| Exam 4 = 60.387 + 1.911*P |
| Exam 4 = 44.628 + 0.421*H |
| Average = 61.131 + 1.782*P |
Figure 1
Homework login rates. The first day of class is day 1. Day 0 to -3 are before the course begins. By the end of the first week, 91% of the OER students logged on.
Figure 2
Regression models for first logins versus exam scores.