The opener: The flow for the opener is not fully articulated in the student materials. Here are some ideas to help you plan out how to launch the investigation:

Read and discuss this introduction. A strong opener for the module could include students reading the cover and introduction. A golden lines protocol could to bring to fore the ideas that stand out to students (both interests and concerns) and put student reading, thinking, and talking in the center stage.

Preview the materials: The opener might also include an opportunity to preview the investigation (both packets) and the reader. Discussion prompts might be: what did you notice? What did you think/predict? What did you wonder?

A routine of reading: The investigation includes several brief introductions of science practices as well as directions. Treat these as texts to be read. Make it a practice for students to do this reading work. Support it with brief clarifying discussions.