Which of the following is NOT one of the four science models?

The correct answer is based on the understanding of established science education models. Inquiry-based learning, differentiated instruction, and Understanding by Design are all recognized approaches within the context of science education reform.

Inquiry-based learning focuses on students investigating questions, encouraging critical thinking, and engaging them in hands-on experiments. Differentiated instruction aligns with various learning styles and abilities, allowing educators to tailor scientific concepts to meet the diverse needs of students. Understanding by Design emphasizes a framework for curriculum planning that begins with the end in mind and works backward to ensure students grasp key concepts effectively.

Collaborative learning, while an effective teaching strategy that fosters teamwork and communication among students, does not specifically constitute a formal model aimed at scientific education. Instead, it serves as a pedagogical approach that can be integrated within the recognized models but does not stand alone as one of the prominent science models like the others mentioned. Therefore, identifying collaborative learning as not fitting within the established science models makes it the correct choice.