From: Removing opportunities to calculate improves students’ performance on subsequent word problems
Type of explanation | Calculable (N = 40) Mean (SD) | Non-calculable (N = 41) Mean (SD) | Group comparison |
---|---|---|---|
Attempted to solve | 2.53 (0.82) | 1.44 (1.16) | t(79) = 4.85 p < .0001 Cohen’s d = 1.09 |
Describing steps | 1.00 (1.09) | 0.32 (0.69) | t(79) = 3.39 p = .001 Cohen’s d = 0.75 |
Explaining mathematical relationships | 1.40 (1.19) | 1.05 (0.95) | t(79) = 1.47 p = .146 Cohen’s d = 0.33 |