Two group are involved here: The experimental and the control groups. They should have similarities, for instance the gender, age, mental ability and the two groups' pretest results. Pretest and posttest contents are the same.

• Design 3 - The Static Group Comparison
• Design 2 - The Single Group Pre and Post Test Design
• Design 4 - The Parallel-Equated Two Group Design Correct
• Design 1 - The One-Shot Case Study