A、Take photos to document their likes and dislikes. B、Highlight the route through green picture frames. C、Pick up wasted plastic

Good morning, ladies and gentlemen. I am Mara Mintzer, an urban planner. My team and I formed a program called “Growing Up Boulder” and my job is to work with children ages zero through 18 to come up with innovative city-design solutions.
    How do we do this, you might ask? Let me give you a real example. In 2012, the city of Boulder decided to redesign a large downtown park, known as the Civic Area. This space is bounded by a farmers’ market on one end, Boulder Public Library on the other end, and by Boulder Creek, which runs through the middle. The space needed a new design to better handle the creek’s inevitable flash floods, restore a sense of safety to the area and support an expanded farmers’ market. So from 2012 through 2014, we engaged more than 200 young people in the process, ranging from preschool through high school students.
    Now, how did we do this? Let me explain. First, we visited children in their classrooms and presented the project: what it was, why their ideas mattered and what would happen with their recommendations. Before we could influence them, we asked children to record their ideas, based on their own lived experiences. Then we asked children to go on a field trip with us, to document what they liked and didn’t like about the space, using photography. Through green picture frames, students highlighted what they liked about the space, such as college students, tubing down the creek.
    Then they flipped those frames over and used the red side to highlight things they didn’t like, such as trash. Our sixth-grade students studied the Civic Area by researching sites with similar challenges from around the world. Then, we invited the kids to combine their original ideas with their new inspiration, to synthesize solutions to improve the space. Each class invited adult planners, city council and community members into the classroom, to share and discuss their recommendations. Boulder’s senior urban planners stepped over blocks and stuffed animals to explore preschool students’ full-size classroom recreation of the Civic Area. Adult planners marveled at the students’ ideas as they shared a park constructed out of a jelly bracelet. It was supposed to be an ice-skating field. And then, public art constructed from animal-shaped plastic beads. And while this may seem ridiculous, it isn’t so different from the models that architects create.
    Now, fast-forward four years, and I am pleased to report that many of the children’s ideas are being implemented in the Civic Area.
    Question 22. For what purpose was the Civic Area redesigned in 2012?
    Question 23. What did the speaker explain to children when presenting the project in their classrooms?
    Question 24. What were those children asked to do when going on a field trip?
    Question 25. What kind of ideas made by the students surprised adult planners?