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Table 4 A summary of the research design

From: Children’s Intuitive Teleology: Shifting the Focus of Evolution Education Research

  Year 1 Year 2 Year 3 Year 4 Year 5
Pre-K PRT     
K PRT–PI PRT–I1–IT–I2–PST    
Grade 1 PRT–PI PRT–I1–IT–I2–PST PRT–I1–IT–I2–PST   
Grade 2 PRT–PI PRT–I1–IT–I2–PST PRT–I1–IT–I2–PST PRT–I1–IT–I2–PST  
Grade 3 PRT–PI PRT–I1–IT–I2-PST PRT–I1–IT–I2–PST PRT–I1–IT–I2–PST PRT–I1–IT-I2––PST
Grade 4 PRT–PI   PRT–I1–IT–I2–PST PRT–I1–IT–I2–PST PRT–I1–IT–I2–PST
Grade 5 PRT–PI    PRT–I1–IT–I2–PST PRT–I1–IT–I2–PST
Grade 6 PRT–PI     PRT–I1–IT–I2–PST
  1. PRT pre-test, also serves as retention test for the previous grade, IT intermediate test, PST post-test, PI pilot intervention, I 1 teaching intervention after the pre-test, I 2 teaching intervention after the intermediate test and before the post-test