Once students have learned to use the RACE strategy to answer open-ended reading comprehension questions, this is a great way to get them to start practicing and applying the strategy. I would show this PowerPoint first: https://www.teacherspayteachers.com/Product/Answering-Open-Ended-Comprehension-Questions-with-RACE-765991
And then you can use this free rubric to assess their responses, setting high expectations from the start: https://www.teacherspayteachers.com/Product/Rubric-for-Reading-Comprehension-Responses-using-RACE-766030
I find that my students really struggle with open-ended responses at first, but after learning and practicing the RACE strategy, their responses really improve!!!!