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2026–27 • Labs & wellness

How Plants Protect Themselves

Explore how spines and leaf coatings help protect plants.

Classroom lesson: How Plants Protect Themselves

Today I can…

match a plant feature with its benefit

Words to know

Words for this lesson

CACTUSSPINELEAFANIMALWATER

Follow along

What we will do

  1. 1

    Meet a cactus

    Look at the cactus photograph.

  2. 2

    Find the spines

    Find the pointed spines in the enlarged photo.

  3. 3

    Match protection

    Match spines to the picture of an animal staying away.

  4. 4

    Look at a leaf

    Look at the photograph of a waxy leaf.

  5. 5

    Match the coating

    Match the waxy coating with helping water stay inside.

  6. 6

    Choose a feature

    Choose one plant feature to explain with the pictures.

Speech, sign, point, eye gaze, or AAC

Tell us what you need

Choose a word when you are ready.

POINTSSMOOTHLOOKHELPBREAK
Teacher & para guideMaterials, learning objectives, access, and safety

Materials

  • Existing cactus and waxy-leaf photographs; display or book; existing AAC. No thorny, toxic, irritating or scented specimens; no loose plant pieces.

Safety first

Keep learners seated at a shared display; offer observation without touch and AAC, gaze, gesture or speech. Honor NO, STOP and BREAK; allow wait time and follow individual vision, allergy, mouthing and supervision plans. Select support individually, never by age or House. Use photos only, presented one at a time. No thorny, toxic, irritating or scented specimens, loose plant pieces, touching or smelling tasks. Spines can discourage animals from eating a plant; a waxy coating helps slow water loss. These are different protective functions, not interchangeable guarantees.

Follow each student's IEP, health, feeding, allergy, behavior, and mobility plans.

Individual learning objectives

Choose Level 1, 2 or 3 individually in either House group. A House is not an ability level. Watching, directing and communicating a boundary are valid participation.

Level 1

Select a pictured plant feature.

Level 2

Match spines with protection from animals.

Level 3

Explain how one feature helps a plant survive.

Skill focus: Plant adaptations, texture/scent discrimination, observation, cause-and-effect

30-minute teaching sequence

Introduce · 5 min

5 min: Show a cactus photograph. Ask, "What do you notice?" Explain that some plant parts help protect the plant. Offer POINTS/SMOOTH and LOOK/BREAK choices; nobody needs to touch or smell a plant.

I do · 10 min

I do 10 min: Enlarge a photograph of spines. Explain that sharp spines can discourage animals from eating the plant. Compare a waxy leaf photograph: its coating helps slow water loss. Identify these as different protections, using pictures rather than real sharp or scented samples.

We do · 10 min

We do 10 min: Present one plant photograph at a time. L1 selects a visible feature. L2 matches spines to an animal staying away. L3 chooses a feature and explains its possible benefit. Revisit the photograph to support the answer; accept gesture or AAC.

Exit choice · 5 min

L1: Where are the spines? L2: What may keep animals away? L3: How does that feature help the plant? Accept AAC, gaze, gesture or speech. Record support.

Science note: Protect means help keep safe.

Curriculum connection: NGSS 4-LS1-1 connection.

Prepare for this learner

Both House groups: choose L1/L2/L3 individually, never by age. Stay seated; teacher controls materials. Offer speech, AAC, pointing or gaze, 1-2 high-contrast choices, wait time, observation/no-touch and NO/BREAK. Record response and support; honor refusal.

Record the response, access method, opportunities and support used. Record observed, declined or not assessed separately; a communicated refusal is not a failure of participation.

Word lesson plan

Editable classroom source plan. Source files may retain earlier titles. Use the individual level choices and safety guidance above when preparing the session.

Download editable lesson plan (Word)

Access supports

Communication Model five core words; accept speech, AAC, eye gaze, gestures, object choices, signs, and partner-assisted scanning.

Sensory Present one material at a time. Offer tools, gloves, observe-only, a scent-free choice, and a quiet break.

Motor Stabilize containers, pre-loosen parts, use adapted grips, and offer seated, standing, partner, or directing roles.

Learning Show the finished result, model first, use short visual steps, repeat, and record the least support needed.

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