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Table 1.
Comparison of mean student scores by target concept and implementation year.
Target conceptCurriculum IterationanMean ± SDMin.Max.tdfP
Life cycle Year 1 68 2.41 ± 0.77 1.164 125 0.247 
Year 2 59 2.22 ± 1.04 
Trait inheritance Year 1 68 2.97 ± 1.01 5.109 125 0.000 
Year 2 59 3.86 ± 0.96 
Trait variation Year 1 68 3.29 ± 0.95 6.427 125 0.000 
Year 2 59 4.41 ± 1.00 
Target conceptCurriculum IterationanMean ± SDMin.Max.tdfP
Life cycle Year 1 68 2.41 ± 0.77 1.164 125 0.247 
Year 2 59 2.22 ± 1.04 
Trait inheritance Year 1 68 2.97 ± 1.01 5.109 125 0.000 
Year 2 59 3.86 ± 0.96 
Trait variation Year 1 68 3.29 ± 0.95 6.427 125 0.000 
Year 2 59 4.41 ± 1.00 
a

Year 1: model-based curriculum; year 2: non-model-based curriculum.

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