OpenSciEd Unit 7.3 · Lesson 07 · 7.A
Look for: represent ideas that the digestive system is…
From Teacher Edition
Facilitation guidance from the lesson plan — what to notice in student thinking and how to respond while teaching.
Building towards
7.A.2 Develop a model based on multiple lines of evidence to represent the inputs, processes, and outputs of the digestive system and the role that the system, and the subsystems within it, play in breaking down matter inputs through chemical reactions, absorbing food, and excreting unused matter.
What to look / listen for
Provide feedback to students as they should include all of the ideas from the Gotta-Have-It Checklist. Specifically, look for students to:
- represent ideas that the digestive system is one system within the human body and that it is made up of smaller parts called organs, which are viewed as subsystems in the digestive system.
- show that food is digested through a series of chemical reactions that break large food molecules down into smaller food molecules. The chemical reactions involved in digestion occur in different parts of the digestive system.
- use the model to show which component they think may function differently in M’Kenna’s digestive system.
- show the inputs, processes, and outputs of the digestive system.
What to do
If students struggle to include all of the key ideas in the model, consider working individually or in small groups with them to return to previous investigations and make sense of the findings.