Unit 6.6: Lesson 1
OpenSciEd 6.6 · Lesson 1 · Injuries & Healing
How I Teach the Unit IntroStart with the mystery.
Injury images, medical reports, a virtual investigation, and real recovery equipment give students something to notice—and a reason to keep revising their ideas.
A foot is injured. Several parts are damaged. Doctors intervene. Over time, the foot begins to work again. What happened inside the body to make that possible?
That question is a strong beginning for a life science unit. My challenge has been turning it into a strong classroom experience. In the small-group version of my opening notebook work, the lesson felt flat. I wanted students to think like scientists, and I needed to give them a clearer job each time they encountered new evidence.
My current introduction builds across two 66-minute meetings. I use the injury case from OpenSciEd Unit 6.6, my own thinking routine and simulation, and hands-on stations with models, X-rays, and recovery equipment. Across those experiences, students keep returning to an explanation and deciding what the next piece of evidence does to it.
The overall sequence
Two meetings, one continuing investigation
Meeting 1: What happened?
INB pages 4–5. Set up the thinking routine. Examine injury images. Read the emergency-room and operation reports. Use the Injury Mystery Lab to test a possible explanation and write a short argument.
Meeting 2: What changes during recovery?
INB pages 6–7. Recall the case, begin interpreting recovery reports, explore six stations, and return to the reports and notebook to revise ideas.
The notebook page numbers belong to my classroom setup; the sequence works with another notebook or a capture sheet. The important connection is that the same case and questions carry across both meetings.
Give the thinking somewhere to go
I set up a notebook we can return to
Students use my Think Like a Scientist four-square: Observe; Hypothesize / Explain / Predict; Question / Investigate; Revise / Refine. The support flap gives them prompts and sentence starters, while the notebook holds their thinking about this particular case.
I introduce the boxes through the work. With the first images, I ask for two specific observations. With the ER report, I ask for one explanation supported by a finding. With the operation report, I ask students to revisit an earlier idea. Questions can be recorded whenever they arise.
That keeps the writing manageable. Students can follow an idea through several pieces of evidence without starting the entire routine over at every reveal.
Meeting 1 · Injury evidence
Let students see the case, then read it
I begin with the visual evidence: photographs of the foot, X-rays, and images showing surgery and recovery supports. Students look closely and point to the image that supports an observation. Because the collection includes different moments in the case, reading the labels matters.
My opening prompt is deliberately small: “I notice ___ in image ___.” That gives us something concrete to discuss before we begin explaining what happened.
The emergency-room report adds evidence about weight-bearing, swelling, feeling, and the position of the bones. I guide students toward a tentative explanation: “I think ___ because the report says ___.” We connect a claim to a particular finding and notice which questions the report leaves open.
The operation report gives students a reason to revise. What was stitched? What did the pins do? What happened to the feeling on the top of the foot? The report describes interventions involving muscle, skin, and bone, while the loss of feeling remains.
I use “I used to think ___. Now I think ___ because ___.” Students can also strengthen an explanation they still support: “I still think ___, and now I have evidence that ___.” Surgery has changed the situation, and we still have a healing process to explain.
Meeting 1 · Test an explanation
Give the simulation a writing purpose
In the Injury Mystery Lab, students use Recreate the Injury to explore how different drops could produce evidence similar to the original case. They can change the object, mass, height, and how the object lands.
I ask students to compare a trial with the original ER evidence and make a purposeful next change. The model provides a possible explanation; a match cannot establish the actual object or exact drop conditions in the original injury. That uncertainty belongs in the argument.
The writing goes under the flap on INB page 5. Students use their best trial to make a claim, identify two matching findings, explain the connection, and identify something to test or revise. Naming the settings makes the claim specific enough to evaluate.
The simulation earns its place because it supplies evidence for a short argument. I want students to connect the drop they chose, the findings they observed, and the explanation they are willing to defend.
Meeting 2 · Recovery evidence
Read for change over time
The next meeting returns to the case with a recall warm-up and the question, “What happens as our body recovers?” Students use their new notebook spread to carry forward observations, explanations, and questions.
For the recovery reports, I keep the annotation system simple. Students mark findings and use those marks to explain how they are interpreting the evidence.
| Mark | What the student is noticing |
|---|---|
| + | Evidence of improvement or healing |
| = | Something that remains the same |
| × | Evidence that an injury or problem remains |
| ? | A finding the student needs help interpreting |
Those symbols open a discussion. Reduced swelling, changes in feeling, and changes in movement give us different kinds of evidence to track. I want students to explain a mark and remain willing to reconsider it as we read more.
Meeting 2 · Hands-on exploration
Put the recovery equipment in their hands
I organize the room into six stations, with about five minutes at each. The current arrangement groups materials by body region. Students can examine models and X-rays, explore supports and fasteners, and think about how the equipment relates to an injured body.
My directions make the invitation explicit: touch and explore, take turns, handle borrowed materials gently, and stop when something resists. At each station, students record one thought in the notebook—an observation, explanation, question, or revision.
| Station | Materials and focus |
|---|---|
| 1 · Knee | Compare supports and X-rays. How could the supports help? |
| 2 · Lower leg | Explore the model and boots. What movement do boots limit? |
| 3 · Head and neck | Explore model pieces and look for related structures in X-rays. |
| 4 · Shoulder | Explore the sling and X-rays. How could a sling help? |
| 5 · Hand | Explore the hand model and splints. How does a splint help? |
| 6 · Torso / general | Explore models and tools. What can each help us learn? |
The physical materials give students another way into the questions raised by the reports. They can inspect the features of a boot, sling, or splint and connect those observations to the story of an injured foot being supported while it recovers.
Return to the explanation
Make revision part of the finish
After the stations, we return to the recovery reports and the four-square. My closing direction is to add at least two new ideas, with at least one in Revise / Refine. Students identify what they learned and explain how it affected an earlier idea.
I want the unit introduction to leave us with useful evidence and questions: several structures were involved in the injury, recovery happened over time, and different findings changed in different ways. The mechanism inside the body is still something we need to investigate.
The thread I want students to carry forward: I can show what I noticed, explain what I currently think, point to the evidence behind it, and identify what I still need to figure out.
That is the routine I want to establish at the beginning of the unit. Every new report, image, model, and investigation gives students another chance to practice it.
Use the materials
Resources for this approach
- Injury Mystery Lab — the case, virtual drop investigation, and recovery tools.
- Think Like a Scientist routine — observation, explanation, investigation, and revision.
- Student thinking guide (PDF) — prompts and sentence starters for the notebook flap.
- OpenSciEd Unit 6.6: Cells & Systems — original unit materials and the injury-and-healing storyline.
- How I Teach Medical Images — my later lesson on seeing structure, systems, and subsystems.
