“…The subject matter of the test refers only to the concept of the human circulatory system. The problem-solving test instrument consisted of formulating problems, formulating hypotheses, collecting data, and conducting inferences/problems consists of 10 questions referring to Sanjaya (2006), which consists of 4 indicators, namely: formulating problems, formulating hypotheses, collecting data, and drawing conclusions. In addition, the creative thinking skills test instrument consists of 8 questions referring to Torrance (2006): fluent thinking, flexible thinking, original thinking, and elaborative thinking.…”