Integumentary System Activity: 8 Hands-On Stations for Teaching Skin, Hair, Nails, and the Body's Largest Organ (TEKS 7.13A)

Chris Kesler · 8 min read

Tell a 7th grader that the largest organ in their body isn't the heart, the liver, or the brain. It's the skin they're sitting in. Watch them look down at their arm. Now tell them that organ has three layers, makes its own oil and sweat, grows hair on purpose to trap heat, and is constantly shedding dead cells and growing new ones. By the time you mention that goosebumps are a hand-me-down reflex from when humans had more body hair to fluff up against the cold, you've got their full attention.

The Integumentary System is the body system kids interact with every second of every day, and the one they think about least. They've felt sweat, gotten sunburned, picked at scabs, and grown hair without ever thinking about the system that does all of it. Ask a 7th grader to name the three layers of skin or explain why we have hair follicles and the answer is usually a blank stare.

The Integumentary System Functions Station Lab for TEKS 7.13A closes that gap in one to two class periods. Kids examine their own skin under a hand lens, run a UV-bead-and-sunscreen experiment in the classroom window, model evaporative cooling by dabbing rubbing alcohol and water on opposite wrists, study a UV intensity graph showing the riskiest hours of the day, and learn the structure and function of the epidermis, dermis, hypodermis, hair follicles, and glands. By the end, they can explain why we sweat, why sunscreen works, and why your skin is the first line of defense against everything trying to get inside you.

⏱ 1–2 class periods 📓 7th Grade Science 🧪 TEKS 7.13A 🎯 Built-in differentiation 💻 Print or Digital

8 hands-on stations for teaching the integumentary system

A station lab is a student-led activity where small groups rotate through 8 stations (plus a 9th challenge station for early finishers) at their own pace during one to two class periods. You become a facilitator instead of a lecturer. You walk around, spot-check the UV-bead bags, and break misconceptions while kids work through the rotation.

The Integumentary System Functions Station Lab has four input stations (where students take in new info on the layers of skin, hair follicles, glands, and how the system protects from UV radiation and regulates temperature) and four output stations (where they show what they learned). Here's what's at each one.

📷 Image slot 1 — add screenshot

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4 input stations: how students learn the integumentary system

🎬 Watch It! —

A short YouTube video walks students through what the integumentary system is and how each part protects the body. Three questions follow: what is the main function of the integumentary system, what four structures make it up, and explain how hair and nails protect the body. Visual learners come alive at this station before they ever pick up a hand lens.

📖 Read It! —

A one-page passage called "Discovering Goosebumps" introduces the integumentary system as a natural shield made of skin, hair, nails, and glands. Students learn the three layers (epidermis, dermis, hypodermis), how hair follicles cause goosebumps, what glands do (sweat for cooling, oil for hydration), and why this system matters. Three multiple-choice questions follow plus five vocabulary words to define: integumentary system, epidermis, dermis, hair follicles, glands. Comes in two reading levels (Dependent and Modified) plus a Spanish version.

🔬 Explore It! —

This is the heart of the lab. Students run three mini-experiments to investigate how the skin works. Experiment 1 (skin observation): use a hand lens to examine the skin on their hand and arm, identify which layer they're seeing (epidermis), and record the structures they can see. Experiment 2 (UV beads and sunscreen): place 3 UV beads in two plastic bags, label them A and B, dab sunscreen on bag B, and put both bags in the window for 1 minute. The beads in bag A change color (UV got through). The beads in bag B don't (sunscreen blocked it). Experiment 3 (evaporative cooling): partner up. One partner dabs rubbing alcohol on the right wrist and water on the left wrist. The alcohol evaporates faster and feels cooler. Six reflection questions tie the experiments to sweat, sunscreen, and how the skin regulates temperature.

💻 Research It! —

Students examine 8 reference cards: a side-by-side No Sunscreen vs With Sunscreen diagram showing how UVA and UVB rays hit the skin layers, a Risk of Skin Damage horizontal bar graph showing percent risk at 15, 30, 60, and 120 minutes of unprotected sun exposure, a UV Radiation Intensity Throughout the Day line graph showing peak risk between noon and 2 PM, and three text cards explaining UV A vs UV B rays, melanin production, and how the integumentary system fights UV damage. Four questions check whether they can compare UV A and UV B effects, identify the best and worst times to be outside, calculate skin damage risk after 30 minutes without sunscreen, and explain how the system protects the body.

📷 Featured station deep-dive — add screenshot of the Explore It! task card

4 output stations: how students show what they learned

📋 Organize It! —

A three-column card sort. Kids match each component (skin, hair/nails, glands) with three of its descriptions. "Largest organ in the body" → skin. "Protect the tips of hands and toes" → hair/nails. "Cool your body down" → glands. The cards include images of skin, hair, and a sweat-drop close-up. Easy to spot-check at a glance.

🎨 Illustrate It! —

Students draw a labeled cross-section of the skin showing the epidermis, dermis, hair follicles, and sweat glands. They use colored pencils to distinguish the three layers and add additional details to make the diagram informative and visually appealing. Even kids who say "I can't draw" surprise themselves here. The drawing locks in the structure that's easy to lose when you're just reading words.

✍️ Write It! —

Three open-ended questions: how does the integumentary system protect the body from external threats, explain how sweat and evaporation help the body regulate its temperature, and describe how the integumentary system interacts with at least one other body system. The third question is the killer. It forces kids to think across systems (skin and circulation, skin and immune defense, skin and the nervous system for touch).

📝 Assess It! —

Three multiple-choice questions plus a fill-in-the-paragraph that uses all five Read It! vocabulary words (integumentary system, epidermis, dermis, hair follicles, glands). The paragraph reads: "The ___ includes your skin, hair, and nails. It consists of several layers, starting with the outer layer known as the ___. Beneath the epidermis lies the ___, which contains important structures like hair follicles and glands..." If you're grading the lab, this is the easiest station to grade.

Bonus Challenge It! station for early finishers

🏆 Challenge It! —

Four optional extensions: create a poster on the role of one specific structure in the integumentary system (sweat glands, nerves, epidermis, dermis, or subcutaneous layer), design a brochure about the integumentary system with a specific audience and at least four parts and functions, build a crossword puzzle using the five Read It! vocabulary terms (at least six words and clues), or build a 3D mini model or diagram of the skin layers using clay or craft supplies. Requires teacher approval before they start.

How this fits into a complete integumentary system unit

This Station Lab is the Explore day of our full Integumentary System Functions Complete 5E Lesson for TEKS 7.13A. The complete two-week unit follows the 5E method of instruction and includes an Engage hook, the Integumentary System Station Lab for Explore, PowerPoint slides and interactive notebook pages for Explain, student choice projects to Elaborate, and an Evaluate assessment.

Most teachers grab the full 5E because the Station Lab lands hardest with the days around it. But if you just need a strong hands-on day on the integumentary system, the Station Lab on its own does the job.

Two options

Full 5E Lesson $13.20 Get the 5E Lesson

Just the Station Lab $7.20 Get the Station Lab

Materials needed to teach the integumentary system

Materials beyond what's in the download:

Hand lens (one per group rotation) for the skin observation activity.
UV-color-changing beads — about 6 per group (3 for each of 2 bags). Roughly $5 for 250 beads online; reusable across years.
Small clear plastic bags (sandwich-size) — 2 per group rotation.
Cream sunscreen (any SPF 30+) — about a dime-sized dab per group. One small bottle covers a class.
Rubbing alcohol (isopropyl, 70% or 91%) — small amount in a labeled cup or bottle.
Water in a separate cup.
Cotton balls — 2 per student for the evaporative-cooling test.
Index cards for the Challenge It! crossword extension.
Colored pencils or markers for the Illustrate It! station and the Challenge It! brochure or poster.
Pencils and the printed answer sheets (included)
A device with internet for the Watch It! station
Sunny window (or a strong UV flashlight as backup) for the UV-bead experiment

Standard covered: Texas TEKS 7.13A —

Investigate and explain the functions of the circulatory, respiratory, digestive, urinary, immune, integumentary, nervous, muscular, skeletal, reproductive, and endocrine systems. Supporting Standard.

See the full standard breakdown →

Grade level: 7th grade life science

Time: One to two class periods (45–110 minutes total). Plan for two periods the first time you run a station lab.

Common student misconceptions this lab fixes

"Skin is just a covering. It doesn't really do anything."
Kids treat skin like wallpaper: it's there, it has color, it covers stuff. The Read It! passage names skin as the largest organ in the body and lists what it does: protects you from germs, regulates body temperature, allows sensations, and keeps water in. The Explore It! UV-bead experiment makes the protection job tangible. Bag A (no sunscreen) changes color in seconds. Bag B (sunscreen) stays white. The skin is doing the same kind of UV-blocking job all the time, plus a hundred other jobs no other organ can do. By the end of the rotation, "skin is just a covering" sounds as ridiculous as "the heart is just a muscle."
"Sweat is gross and pointless."
Kids associate sweat with smell, embarrassment, or gym class. The Explore It! evaporative-cooling activity reframes it. Dab water on one wrist and rubbing alcohol on the other. The alcohol evaporates faster and feels noticeably cooler than the water. The reason: evaporation pulls heat away from the skin. That's exactly what sweat does on a hot day, on purpose. The Read It! passage and the Research It! cards back this up: glands in the dermis produce sweat, sweat evaporates, and that's how the body cools itself when it gets too hot. Sweat isn't gross. It's a built-in air conditioner running on physics.
"Sunscreen is only needed when it's hot and sunny."
Kids think sunburn risk equals temperature. The Research It! UV Radiation Intensity graph corrects this fast: UV intensity peaks between noon and 2 PM and the worst hours have nothing to do with how the air feels. UV A rays are also "fairly constant throughout the day and year," meaning they're hitting your skin even on cool, cloudy days. The Risk of Skin Damage bar graph shows roughly 50% damage risk after just 60 minutes of unprotected sun. The Explore It! UV-bead-and-sunscreen experiment closes the loop: the beads change color even on a cool morning. Heat doesn't cause sunburn. UV does, and UV doesn't care what the temperature is.

What you get with this integumentary system activity

📷 Inside-the-product — add screenshot of Read It passage or sample answer sheet

When you buy the Station Lab, you get a single download with everything you need:

Print version at two reading levels (Dependent for on-grade, Modified for additional support) plus a Spanish Read It! passage
Digital version as PowerPoint files (works in Google Slides too) at both levels — for 1:1 classrooms or Google Classroom
Teacher Directions and Answer Key for both versions, all keys included
Station task cards ready to print, laminate, and drop in baskets at each station
Reference cards for the Research It! station (No Sunscreen vs With Sunscreen diagram, Risk of Skin Damage bar graph, UV Radiation Intensity line graph, three text cards on UV A/B rays and melanin)
Sort cards for the Organize It! station (12 cards split across skin, hair/nails, and glands)
Student answer sheets for each level

No login required. Download once, use forever. Reprint as many times as you want.

Tips for teaching the integumentary system in your 7th grade classroom

Two things make this lab go smoother the first time:

1. Buy UV-color-changing beads in bulk and store them in a sealed black container.

UV beads are about $5 for 250 online and they last for years if you store them right. Keep them in an opaque container (an empty pill bottle wrapped in foil works) so they don't get exposed between classes and end up partially activated. Pre-bag 6 beads (3 per Ziploc, two Ziplocs per group) the night before. The activation is quick: kids see the color change in 30 seconds in a sunny window. If your room doesn't get direct sun, a UV flashlight (about $10) does the same job indoors.

2. Run the rubbing-alcohol cooling test as a quick whole-class demo before the Explore It! station opens.

At the start of class, dab one drop of water on the back of your hand and one drop of rubbing alcohol on the other side. Walk around so kids can see. The alcohol evaporates in seconds and your skin visibly cools. You can even pretend to shiver dramatically. Sets up the cooling station perfectly and gives every kid the prediction in their head before they get there. It also lets you remind them not to drink the rubbing alcohol, which has to be said.

Get this integumentary system activity

Integumentary System Functions Station Lab for 7th grade life science — TEKS 7.13A

Buy the Station Lab — $7.20

Or if you want the full two-week experience with the Engage hook, Explain day, Elaborate extension, and Evaluate assessment all included:

Buy the full 5E Complete Lesson — $13.20

(Station Lab is included)

Frequently asked questions

What does TEKS 7.13A cover?

Texas TEKS 7.13A asks 7th grade students to investigate and explain the functions of all the major body systems, including the integumentary system. By the end, students should be able to describe the layers of skin (epidermis, dermis, hypodermis), name the structures (hair follicles, glands), explain how the system protects the body, regulates temperature, and detects sensations. This Station Lab focuses specifically on the integumentary system. The other body systems (circulatory, respiratory, digestive, urinary, immune, nervous, muscular, skeletal, reproductive, endocrine) each have their own dedicated Station Lab.

Why is the skin called the largest organ?

An organ is a group of tissues that work together to do a specific job. By that definition, your skin qualifies. It has three layers (epidermis, dermis, hypodermis), it contains nerves, blood vessels, hair follicles, and glands, and it does multiple coordinated jobs: protecting from germs, regulating temperature, sensing touch and pain, producing vitamin D, and keeping water in. By surface area and weight, skin is the largest organ in the human body. An average adult has about 21 square feet of skin weighing roughly 8-9 pounds. The Read It! passage spells this out and the Illustrate It! station forces kids to draw and label the three layers.

How long does this integumentary system activity take?

One to two class periods (45 to 110 minutes total). The Explore It! station has three mini-experiments (skin observation, UV beads and sunscreen, evaporative cooling), which is the longest part. Plan for two periods the first time you run a station lab. Once your class has the routine down, most groups can finish all 8 stations in one period.

Do I need to provide my own materials?

UV beads, plastic bags, sunscreen, rubbing alcohol, cotton balls, hand lens, index cards, and colored pencils. Total cost for a class of 30: under $20 if you don't already have these supplies. The UV beads and the hand lens are reusable for years. The Watch It! station also needs a device with internet, and the UV experiment needs a sunny window or a UV flashlight as backup.

Can I use this in a 1:1 digital classroom?

Yes. The full digital version (PowerPoint or Google Slides) works in 1:1 classrooms and Google Classroom. The three Explore It! experiments can be replaced with simulation or video equivalents in the digital version, or you can keep the Explore It! station as the one physical center kids rotate through.