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Effect Size (Cohen’s d) by Unit and Grade
| Unit | Grade 3 | Grade 4 | Grade 4 |
|---|---|---|---|
| Cardiovascular fitness | 1.72 | 1.50 | .97 |
| Muscular fitness | 2.21 | 1.44 | 1.70 |
| Flexibility/nutrition | 2.21 | 1.40 | 1.47 |
Note.—An effect size of 0.2 to 0.3 might be a small effect, around 0.5 a medium effect, and 0.8 to infinity a large effect (Cohen, 1988).
