Students work through the stages of collecting, representing, and analyzing data for a question that they choose. I suggest making sure students check in with the teacher before moving onto the next stage. This way, you can assist with misunderstandings in real time, instead of getting a final product that has been done wrong. After my students finish successfully, I have them copy their line plot onto construction paper to make a "beautiful bulletin board version" that goes into the hallway.
Pages 1-2: Easier version. Contains guiding questions to help student formulate their question and understand how they will be representing it.
Pages 3-4: More challenging version. In this version, students are comparing two groups of data. For example, height of 2nd graders compared to height of 5th graders.