Table 1 Average number of explanations of each type by group (study 1)
From: Removing opportunities to calculate improves students’ performance on subsequent word problems
Type of explanation | Calculable (N = 16) Mean (SD) | Non-calculable (N = 16) Mean (SD) | Group comparison |
|---|---|---|---|
Attempted to solve | 1.81 (1.28) | 1.06 (1.06) | t(30) = 1.81 p = .081 Cohen’s d = 0.64 |
Describing steps | 0.81 (0.75) | 0.63 (0.81) | t(30) = 0.68 p = .501 Cohen’s d = 0.23 |
Explaining mathematical relationships | 1.06 (1.00) | 0.94 (1.00) | t(30) = 0.354 p = .726 Cohen’s d = 0.12 |