Endocrine System Activity: 8 Hands-On Stations for Teaching Hormones, Glands, and Homeostasis (TEKS 7.13A)

Chris Kesler · 8 min read

Tell a 7th grader that their stomach sends a chemical message to their brain when they're hungry. They'll squint at you. Tell them the message has a name (ghrelin) and that another chemical (leptin) tells the brain when they're full. Now they're paying attention. Tell them that the same kind of chemical messenger is what keeps them awake at school, makes their heart pound when they hear a loud noise, and decides whether they grow taller this year. That's the endocrine system. And until you say it that way, most kids think "hormones" is a word adults use to explain mood swings.

The Endocrine System is the most invisible body system. There's no obvious organ to point to (the way you point to the heart for circulation or the lungs for respiration). It's a network of glands scattered through the body sending chemical messages through the bloodstream. Ask a 7th grader what a gland is, what an organ does, what a hormone is, or what "homeostasis" means, and you usually get a long pause.

The Endocrine System Functions Station Lab for TEKS 7.13A closes that gap in one to two class periods. Kids run a lock-and-key puzzle simulation matching hormones to receptors, study reference cards covering every major gland (hypothalamus, pituitary, pineal, adrenal, thymus, pancreas, thyroid), interpret a blood-sugar graph showing when the pancreas releases insulin versus glucagon, and learn how the system maintains homeostasis. By the end, they can explain why a gland sends a hormone, how the receptor on a target cell catches it, and what happens when the message gets through.

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

8 hands-on stations for teaching the endocrine 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 puzzle matches, and break misconceptions while kids work through the rotation.

The Endocrine System Functions Station Lab has four input stations (where students take in new info on glands, hormones, receptors, and how the system maintains homeostasis through chemical messengers) 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 endocrine system

🎬 Watch It! —

A short YouTube video walks students through what the endocrine system is and how the major glands work. Three questions follow: what are the chemical signals glands produce called, name two of the endocrine system's glands and describe what they help control, and what is one way the thymus works with another body system aside from the endocrine system. Visual learners come alive at this station before they ever pick up a puzzle piece.

📖 Read It! —

A one-page passage called "Behind the Scenes: How Your Body Stays Balanced" introduces the endocrine system as a network of glands that produce hormones, the role of the pituitary gland (the master gland), the thyroid (metabolism), the adrenal glands (fight or flight), and the pancreas (insulin to lower blood sugar). Three multiple-choice questions follow plus five vocabulary words to define: endocrine system, glands, hormones, receptors, homeostasis. Comes in two reading levels (Dependent and Modified) plus a Spanish version.

🔬 Explore It! —

This is the heart of the lab. Students play a hormones-and-receptors puzzle game with four stations marked SLEEPY, THIRSTY, HUNGRY, and HAPPY. Pieces marked "H" are hormones (chemical signals from glands) and pieces marked "R" are receptors (attached to cells). The receptors cannot move, only the hormones can. Students try to match each hormone to its corresponding receptor. When a pair fits, they flip the pieces over to confirm the message and the body's response. Three reflection questions wrap it up: did every hormone fit into every receptor and why, did any pairs seem to match physically but the words didn't fit, and what are some examples of responses the endocrine system controls.

💻 Research It! —

Students examine 14 reference cards: descriptions of the hypothalamus, pituitary gland, pineal gland, adrenal glands, thymus, pancreas, and thyroid gland; a labeled diagram of the endocrine system showing where each gland sits in the body; an explanation of how ghrelin and leptin control appetite; an explanation of how the pancreas uses insulin (after eating) and glucagon (between meals) to regulate blood sugar; and a glucose-vs-time chart with three labeled points (A, B, C). Five questions check whether they can name the chemical messages glands produce, identify which gland regulates sleep, name the two appetite hormones, and use the blood-sugar graph to figure out at which point the pancreas started creating insulin and at which point it created glucagon.

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

4 output stations: how students show what they learned

📋 Organize It! —

A two-column card sort. Kids match each part of the endocrine system (pituitary gland, thyroid, adrenal glands, pancreas, hormones, receptors) with its function. "Regulates blood sugar levels" → pancreas. "Chemical messages produced by glands" → hormones. "Part of a cell that matches with hormones to trigger a response in the body" → receptors. Easy to spot-check at a glance.

🎨 Illustrate It! —

Students draw a labeled body diagram of the endocrine system using the reference card as a guide. Required labels: pituitary, thyroid, adrenal, pancreas, ovaries, and testes. Even kids who say "I can't draw" surprise themselves here. The drawing locks in where each gland actually sits in the body, which is easy to lose when you're just reading about it.

✍️ Write It! —

Three open-ended questions: how do hormones travel throughout the body, explain how hormones use a "lock and key" system with the receptors, and describe an example of how the endocrine system affects daily activities. The second question is the killer. It forces kids to chain the Explore It! puzzle game and the Read It! reading into one continuous explanation of why a hormone only triggers the right cell.

📝 Assess It! —

Three multiple-choice questions plus a fill-in-the-paragraph that uses all five Read It! vocabulary words (endocrine system, glands, hormones, receptors, homeostasis). The paragraph reads: "___ are chemical messengers produced by ___ in the body. The ___ helps regulate various functions by releasing these chemicals. They bind to specific ___ on target cells to maintain ___..." 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: build a crossword puzzle using at least 10 vocabulary words from the lesson, design an interactive Kahoot or Quizizz quiz with 10 questions on the endocrine system, research a specific endocrine disorder (diabetes, hyperthyroidism) and create a poster explaining causes/symptoms/treatments, or draw a four-panel comic strip that tells a story involving hormones regulating bodily functions. Requires teacher approval before they start.

How this fits into a complete endocrine system unit

This Station Lab is the Explore day of our full Endocrine 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 Endocrine 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 endocrine 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 endocrine system

Materials beyond what's in the download:

Index cards for the Challenge It! crossword and flashcard extensions.
Colored pencils or markers for the Illustrate It! station body diagram.
Optional small zipper bag or envelope per group to keep the Explore It! puzzle pieces together between groups.
Pencils and the printed answer sheets (included)
A device with internet for the Watch It! station and the optional Challenge It! Kahoot or Quizizz extension
A whiteboard or chart paper for the Challenge It! comic strip extension (or just blank paper)

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

"Hormones are just for puberty and mood swings."
This is the rule kids learn from TV: "hormones" = teenagers acting weird. The Read It! passage reframes hormones as chemical messengers that control everything from heart rate to blood sugar to sleep, every minute of every day. The Research It! cards on ghrelin and leptin (appetite), insulin and glucagon (blood sugar), and melatonin (sleep) show kids that hormones are running their body right now, not just during puberty. The Explore It! puzzle game makes the connection physical: every match (SLEEPY, THIRSTY, HUNGRY, HAPPY) is a hormone-receptor pair that's firing in their body multiple times a day.
"All hormones can affect any cell in the body."
Kids assume hormones flood the bloodstream and tell every cell to do the same thing. The Read It! passage corrects this directly: hormones travel through the blood to specific receptors on target cells, and only the right hormone fits the right receptor (like a key fits one lock). The Explore It! puzzle game drives this home physically. The puzzle pieces are shaped so only certain H pieces fit certain R pieces. When kids try to force a wrong match, the shape doesn't work. That's exactly how it works in the body. A growth hormone receptor on a bone cell will not respond to insulin, even if insulin is right next to it in the bloodstream.
"The pancreas only does one thing for blood sugar."
Kids hear "the pancreas controls blood sugar" and stop there. The Research It! card on blood sugar shows the pancreas does two opposite jobs: insulin to lower blood sugar after eating, and glucagon to raise blood sugar between meals or when hungry. The blood-sugar graph (with points A, B, C) lets kids see the rise after a meal (point B), the fall as insulin works (point C), and the baseline (point A). Two hormones. Two opposite effects. One organ. That's homeostasis in action, and it's a model kids carry forward into thermoregulation, hydration, and every other balance system you teach.

What you get with this endocrine 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 (descriptions of every major gland, labeled body diagram, ghrelin/leptin appetite explanation, blood-sugar graph and table, pineal gland diagram)
Hormones-and-receptors puzzle pieces for the Explore It! activity (4 hormone-receptor pairs labeled SLEEPY, THIRSTY, HUNGRY, HAPPY)
Sort cards for the Organize It! station (12 cards matching each gland or term to its function)
Illustrate It! reference card with the labeled endocrine-system body diagram
Student answer sheets for each level

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

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

Two things make this lab go smoother the first time:

1. Laminate the puzzle pieces and store them in baggies between class periods.

The Explore It! puzzle pieces are the most-handled material in the lab. Print them on cardstock and run them through the laminator before period 1. Put each set in a labeled snack-size Ziploc with a number written on it. When a group finishes, they put all 8 pieces back in the bag before they rotate. You'll get three years of use out of one set instead of reprinting between every class.

2. Tie the lock-and-key analogy to a physical lock you bring in.

Bring a padlock and three different keys to class on lab day. Hold up a wrong key and try to open the lock. Hold up the right key and open it. That 60-second demo previews the Explore It! station better than any video. Tell them the puzzle pieces work the same way: only one hormone fits one receptor. It also gives you a callback during the wrap-up: "What's the lock? What's the key? What happens when the right key goes in?"

Get this endocrine system activity

Endocrine 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 endocrine system. By the end, students should be able to describe how glands produce hormones, explain how hormones travel through the bloodstream and bind to specific receptors on target cells, and give examples of how the endocrine system helps maintain homeostasis (blood sugar, sleep, appetite, stress response). This Station Lab focuses specifically on the endocrine system. The other body systems (circulatory, respiratory, digestive, urinary, immune, integumentary, nervous, muscular, skeletal, reproductive) each have their own dedicated Station Lab.

What is homeostasis and why does the endocrine system matter for it?

Homeostasis is the body's ability to keep its internal environment stable despite changes outside. Body temperature near 98.6 degrees Fahrenheit, blood sugar in a narrow range, hydration levels, sleep cycles. The endocrine system is one of the main ways the body does this. When something gets out of balance (blood sugar spikes after a meal, body temperature drops in cold air, you go too long without food), a gland releases a hormone that tells specific cells to take a corrective action. The blood-sugar example in Research It! makes this concrete: pancreas releases insulin when sugar is high, releases glucagon when sugar is low. Two hormones, opposite effects, one balanced system.

How long does this endocrine system activity take?

One to two class periods (45 to 110 minutes total). The Research It! station has 14 reference cards, 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?

Index cards, colored pencils, and optional small baggies for storing the puzzle pieces between groups. Total cost for a class of 30: under $5 if you don't already have these supplies. The Watch It! station also needs a device with internet, and the optional Challenge It! Kahoot extension uses a device per group.

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 puzzle game can be run as drag-and-drop on the digital slides, or you can keep the Explore It! station as the one physical center kids rotate through.