Pirl Experimental / Curriculum

Give curiosity
something to do

Designing injuries-and-healing stations that invite students to touch, test, explain, and ask better questions.

By William P. Pirl
7th-grade science / Student engagement

Holding a film toward light changes what students can observe. The next teaching move is to ask what that detail means.

A knee brace, a walking boot, and a hand model each offer a place to begin. A student can notice a strap, compare two materials, or point to a feature in an X-ray before knowing all the vocabulary. I built this station experience to give students more ways to enter our injuries-and-healing unit.

The teaching challenge is deciding what students will do with that access. For this lesson, the plan is six stations, about five minutes at each, and one useful piece of thinking recorded at every stop. The materials invite exploration; the prompts and notebook routine give that exploration a purpose.

An invitation to investigate

My goal is to make the opening work of the unit more concrete. OpenSciEd 6.6, Cells & Systems, uses an injury-and-healing story to build toward explanations involving cells and interacting body systems. These classroom stations add objects and representations that students can examine as they develop their initial ideas.

I want students to have permission to handle the materials and enough direction to begin. They can open a fastener, compare a model with an image, or examine how a support is put together. They should also know how to share the materials, stop when something resists, and leave the station ready for the next class.

This experience fits into my broader work on modifying OpenSciEd Unit 6.6. The goal is to give students a concrete starting point for the questions we will keep investigating.

Classroom slide: about five minutes per station; touch and explore; handle borrowed items gently; do not force or throw; reset the station. — The opening slide makes time, permission, care, and shared responsibility visible before the first rotation. Select a photo or slide to enlarge it.

Six places to begin

Each table pairs familiar objects with a question students can approach before a formal explanation. The shared habits stay the same as the objects and body regions change.

Station 01

The knee

Knee sleeves and supports beside X-ray films.

Soft knee supports and X-ray films invite students to compare what they can handle with what they can see inside a body. Shape, flexibility, openings, and the arrangement of parts are all available as starting observations.

Try: Gently flex a support and examine a film toward the light.

Think: What can each material or image help you notice?

Station 02

The lower leg

A lower-leg model, walking boots, foot models, and medical images.

The lower-leg model sits beside walking boots, foot models, and images. Students can compare several representations of a similar area, then consider how a support device changes the movement it allows.

Try: Inspect the model; open and close the boot fasteners gently.

Think: What does the model show clearly, and what does it leave out?

Station 03

Head and neck

Anatomical head and brain model pieces alongside X-ray films.

The model pieces give students an inside view they can explore. The films add a second representation to compare. A useful question may come from something the model shows that students cannot easily identify in an image.

Try: Match pieces that fit easily; compare the model with a film.

Think: What can you see in both? What remains uncertain?

Station 04

The shoulder

A shoulder sling and a collection of shoulder X-ray films.

A sling and shoulder X-rays bring the conversation to support, position, and movement. Students can examine the sling as a designed object: where it holds an arm, how its straps connect, and what its shape suggests.

Try: Open a fastener and trace how the straps connect.

Think: How could this design help someone with a shoulder injury?

Station 05

The hand

A hand and forearm model, finger splints, wrist supports, and printed X-rays.

The hand station combines a bone model, finger splints, wrist supports, and X-ray images. It offers many small details to compare, so I want students to choose one relationship and look closely rather than try to name everything.

Try: Compare a finger splint with the model and a printed image.

Think: Which movement might the splint limit? What makes you think so?

Station 06

Torso / general

A torso model, elastic wraps, stethoscopes, examination tools, and medical images.

The torso model, skeleton, wraps, and examination tools widen the view to the whole body. Students can sort out what a model represents, what an image reveals, and what a tool might help someone observe.

Try: Handle a tool gently and compare the torso with the skeleton.

Think: What could each help us learn, and what could it not tell us?

Give the notebook a useful job

Six places to record. One familiar menu of thinking moves.

Notebook setup with a warm-up space and six station boxes: knees, lower leg, head, shoulders, hands, and general. — The six boxes preserve a specific idea from each station.

Keep the writing small

The notebook slide uses six boxes labeled by station. Students can keep their Think Like a Scientist flap open and use it to choose what belongs in each box. One specific sentence or labeled sketch is a workable starting expectation.

The station number tells us where the idea came from; the entry should show what the student actually noticed or thought.

Observe

I notice ___ on the model or image.

Explain / Predict

I think ___ because I noticed ___.

Question / Investigate

I wonder ___. I could compare ___.

Revise / Refine

I used to think ___. Now I think ___ because ___.

A student does not need to complete all four thinking moves at every station. That would use much of a five-minute visit. I would ask students to choose the move that fits what they are doing, then add detail when I stop to confer with them.

One possible bookend is a prediction before the rotations and a revision afterward. That makes the opening and closing entries part of the same developing explanation.

Keep the thinking guide within reach. The Interactive Science Notebook Guide explains the larger notebook system. These printable tools support the four thinking moves:

Make room for the thinking

A possible 66-minute lesson sequence, with the rotations connected to the recovery reports.

Station slide for the knee, lower leg, and head and neck, with photos and short prompts. — Stations 1–3: notice and test.

Station slide for the shoulder, hand, and torso, with photos, prompts, and a reminder to record one thought per station. — Stations 4–6: support and protect.

A possible 66-minute sequence
Time	What students do
0–5 min	Opening predictionWhat might support an injured body as it heals?
5–9 min	Launch and modelShow gentle handling, sharing, and one useful entry.
9–39 min	Six station roundsAbout five minutes each, including recording and reset.
39–43 min	Reset and brief shareReturn materials; surface a question worth revisiting.
43–60 min	Recovery reportsAnnotate changes and discuss the evidence.
60–66 min	Revise and refineReturn to the opening idea; explain a change in thinking.

The timing is a planning model, not a claim about how every class will run. I would protect most of each round for exploration and reserve its final stretch for one entry and a reset. Sharing turns matters more than having every student handle every object.

For the recovery reports, the notation stays simple: + for improving, − for worsening, = for unchanged, and ? for unclear. Students can then connect a report detail to a question raised at a station.

Lesson 1: Start With the Mystery gives more context for the injury evidence and the opening work of the unit.

Look for the thinking you want

What I would listen for

A useful check is whether a student can connect an action to an idea. What happened when the fastener closed? Which feature in an image supports the explanation? What would the student need to investigate next?

A finished box gives me a place to begin that conversation. I can ask for a clearer detail, invite a student to point to evidence, or ask a partner to offer a different explanation. The aim is to make the thinking more visible while the materials are still in front of them.

For this first version, I would collect a few notebook entries and make brief notes about participation. Those examples can guide the next revision of the lesson.

Three signs worth collecting

A specific observationAn entry names a feature, part, material, or change the student actually examined.
An explanation with a reasonThe student connects an idea to something visible in the model, device, or image.
A question or a revisionThe student identifies an uncertainty, suggests a comparison, or changes an earlier idea.

Build a version you can sustain

Start with a small collection

The essential planning work is deciding which objects and images belong together and what a student can usefully do with them. A model, a support device, and a clear image may be enough for a first version. I would start with fewer tables if that lets students explore with care and gives me time to listen.

Offer more than one way in

A labeled sketch, a spoken rehearsal with a partner, or a sentence stem can support the same expectation: record a specific idea grounded in the station. Students who are ready can compare representations, identify a model limitation, or propose a next investigation.

I would also keep the whole class connected to the same question. After the rotations, we return to evidence about an injury and recovery. That return is where the stations become part of a longer explanation students can keep refining throughout the unit.

Keep the investigation going

These related resources connect the station experience to the rest of the unit.