Which of the following questions are open-ended questions and can be used to enhance mathematical thinking?

Open-ended questions are questions that do not have a single correct answer. Instead, they allow for multiple responses, interpretations, or approaches.

Key Points

• Write a real-world problem for which 2x + 4 = 8 is a solution."
• This question is open-ended because it requires students to think beyond the given equation and create a real-world context that fits it.
• The open-ended nature of the question allows for multiple correct answers and encourages students to think creatively and apply their mathematical understanding in a broader context.
• Students must imagine a scenario where the equation applies. For example, they might come up with a situation involving money, distance, or any other measurable quantity.

Hence, we can conclude that "Write a real-world problem for which 2x + 4 = 8 is a solution" is an open-ended question.