Endocrine System Functions Lesson Plan (TEKS 7.13A): A Complete 5E Lesson for Hormones, Glands, and How the Body Keeps Itself in Balance

Inside the Endocrine System Functions 5E Lesson

The 5E instructional model walks students through five phases: Engage, Explore, Explain, Elaborate, and Evaluate. It flips the traditional lecture-first sequence on its head. Students explore a concept hands-on before you ever explain it, which means by the time you do explain it, they have something to hook the vocabulary onto.

I switched to the 5E model years ago and stopped going back. Kids retain more, ask better questions, and stop staring at me waiting to be told the answer. The Endocrine System Functions 5E Lesson is built on this framework from start to finish. Here's how it plays out across the five phases.

🎯 Engage

Day one is a teacher-led hands-on exploration. Each small group gets a stack of "hormone messenger cards" (insulin, adrenaline, melatonin, growth hormone, thyroid hormone), a set of gland location cards, and a target organ board. Following the teacher directions, they work through scenarios (you ate a candy bar, you woke up at sunrise, you almost got hit by a basketball) and trace which gland releases which hormone to which target.

By the end of the period, kids have the gland map annotated, a working set of hormone-to-gland matches on their student sheet, and they can explain in their own words why hormones travel slowly compared to nerve signals and why the body needs both. Nobody has heard a vocabulary lecture yet. That's the point. They walk into the rest of the unit with a working model of chemical signaling, not a memorized list of glands.

What's included in the Engage:

• Teacher directions for the hormone scenario activity
• Printable student observation sheet
• Answer key for the discussion questions
• Four learning objective slides (standard verbatim, "Describe" verb highlighted, "I CAN...", and "WE WILL...")
• An illustrated Body Systems Word Wall in English and Spanish covering the full unit vocabulary

🔬 Explore

The Endocrine System Functions Station Lab is the heart of the Explore phase. Students rotate through 8 stations (plus a 9th challenge station for early finishers) over one class period. The Station Lab is split into four input stations (where kids take in new information) and four output stations (where they show what they learned).

The four input stations:

• 🎬 Watch It! — Students watch a short video on the structure and function of the endocrine system and answer guided questions about hormones, glands, and feedback loops.
• 📖 Read It! — A one-page reading passage at two differentiated levels, with a Spanish version included.
• 🔬 Explore It! — Students model a negative feedback loop using a paper thermostat and "hormone" tokens, raising and lowering a "blood sugar" level until it stays in the safe zone.
• 💻 Research It! — Reference cards on the major glands (pituitary, thyroid, adrenal, pancreas, ovaries, testes), the hormones each one produces, and what those hormones do.

The four output stations:

• 📋 Organize It! — A card sort where students match hormones (insulin, adrenaline, melatonin, growth hormone, thyroxine) to their gland of origin and justify each choice.
• 🎨 Illustrate It! — Students draw a labeled diagram of the major endocrine glands on a body outline and color-code which body system each one most interacts with.
• ✍️ Write It! — Three open-ended questions in complete sentences (this is where you see who really understands feedback loops and homeostasis).
• 📝 Assess It! — A short formative check with multiple choice and a fill-in-the-blank vocabulary paragraph.

Print and digital versions are both included. If you want the full breakdown of what happens at every single station, what students produce, and how to set it up, that's in our dedicated Station Lab post.

→ Read the full Endocrine System Functions Station Lab walkthrough 8 stations, materials list, teacher tips

The Station Lab is included in the full 5E lesson. You don't need to buy it separately if you're getting the whole unit.

📚 Explain

Here's the real payoff of doing the Engage and Explore before the Explain: by the time kids hit this phase, they've already traced hormones through scenarios and modeled a feedback loop with their hands. They have a working understanding before you ever start naming things. The discussions get deeper, the questions get sharper, and you spend less time defining and more time pushing their thinking.

The Endocrine System Functions Presentation walks 7th graders through the full scope of TEKS 7.13A for this system, one concept at a time. The deck opens with the big function of the endocrine system: it uses chemical messengers called hormones to regulate the body. Mood, sleep, growth, metabolism, blood sugar, stress response, and reproduction are all coordinated by the endocrine system. The deck makes one point hard early: the endocrine system and the nervous system both send messages, but they do it in very different ways. Nerves fire fast electrical signals through specific pathways. Hormones travel slower through the bloodstream and only act on cells with the right receptors. Two systems, two speeds, same goal: keeping the body running smoothly.

From there the deck walks through the major glands one at a time. The hypothalamus sits at the base of the brain and is the link between the nervous system and the endocrine system. It tells the pituitary gland what to do. The pituitary is called the master gland because it releases hormones that control other glands, including growth hormone that determines how tall a 7th grader gets to be. The thyroid, shaped like a butterfly wrapped around the trachea, controls metabolism (how fast the body uses energy). The adrenal glands, sitting on top of the kidneys, produce adrenaline for the fight-or-flight response and cortisol for longer-term stress. The pancreas releases insulin to lower blood sugar after a meal and glucagon to raise it when sugar drops too low. The ovaries (in females) and testes (in males) produce the reproductive hormones that drive puberty (which is exactly the conversation 7th graders are silently having about their own bodies, whether you bring it up or not).

Then the lesson tackles the most important concept of the unit: feedback loops. A negative feedback loop is how the body keeps things in balance, also called homeostasis. Blood sugar is the classic example. When you eat a candy bar, your blood sugar shoots up. The pancreas senses it and releases insulin, which moves the sugar out of the blood and into your cells. Blood sugar drops back to normal. Hours later, when blood sugar starts to dip too low, the pancreas releases glucagon, which tells the liver to release stored sugar. Blood sugar rises back to normal. Up triggers down. Down triggers up. The system never sits still, but it stays in a healthy range. The deck includes a built-in matching activity where students drag steps of a feedback loop into the right order. Once kids see the loop, the whole "why does the body need hormones" question answers itself.

The deck also covers target cells and why hormones don't affect every cell in the body. Hormones travel through the bloodstream to every tissue, but only cells with the right receptor will respond. The deck uses a lock-and-key analogy: the hormone is the key, the receptor is the lock, and only the matching pair fits. That's how insulin can travel through your whole body but only affect cells that need to take in sugar. It also covers how the endocrine system interacts with other body systems. The endocrine system uses the circulatory system to deliver hormones. It works with the nervous system through the hypothalamus. It coordinates with the digestive system (pancreas, blood sugar), the immune system (thymus), and the urinary system (kidneys regulate water balance with help from antidiuretic hormone).

What makes the Endocrine System Functions Presentation different from a typical body-systems slideshow is that kids are doing something on almost every slide. It's not a lecture deck. It's a participation deck. "Your answer:" prompts appear on most slides, Brain Breaks reset attention every few slides (one walks kids through the thermostat analogy of negative feedback), and Quick Action INB tasks (gland matching, hormone tracing, feedback ordering) show up throughout. Think About It prompts push deeper into bigger ideas like comparing the endocrine system to the postal service and analyzing how the body maintains temperature homeostasis. The deck closes with a Check for Understanding tied back to the Essential Questions: What are the main functions of the endocrine system? and How does it interact with the other body systems?

The Explain materials in this product include:

• An editable Presentation at two differentiated levels (Dependent and Modified), works in PowerPoint or Google Slides
• A guided fill-in-the-blank student notes handout that mirrors the Presentation, with answer key
• A Paper Interactive Notebook (English and Spanish) students cut, fold, and glue into their notebooks
• A Digital Interactive Notebook at both levels with answer keys, for 1:1 classrooms or Google Classroom

The Explain runs across two class periods. The built-in Think About It prompts are where the real discussion happens, so let those breathe.

🛠️ Elaborate

The Elaborate phase is where students stretch what they learned about the endocrine system and put it into a project of their choosing. In this 7th grade life science lesson, that's a Student Choice Project board with six different project options plus a "design your own" pathway.

Students might design a "trading card" for their favorite gland with its hormone, target, and function listed, build a 3-D model of a negative feedback loop using a thermostat as the analogy, write a short story from the point of view of an insulin molecule released after a Thanksgiving dinner, or record a video walking through what happens to the endocrine system during a stressful situation. There are options for kids who love to write, kids who love to draw, kids who love to build, and kids who love to perform. Whatever the project, the point is the same: students apply hormones, glands, and feedback loops to a real-world artifact instead of a worksheet.

Choice is the whole point. By letting students pick how they show their thinking, you get more authentic work for TEKS 7.13A and you actually get to see what they understand about the endocrine system.

The rubric (the part teachers actually want)

Every project, no matter which option a student picks, is graded on the same rubric. Five categories at 20 points each:

• Vocabulary (20 pts) — At least four words from the lesson are used in context.
• Concepts (20 pts) — At least two key concepts from the lesson are referenced.
• Presentation (20 pts) — The project grabs attention and is well-organized.
• Clarity (20 pts) — Easy to understand. Free of typos.
• Accuracy (20 pts) — Drawings and models are accurate. The science is right.

The rubric uses a minus / check / plus shorthand on every row so you can grade a stack of projects quickly without re-reading every criterion.

Two differentiated versions in one file

The standard version is for students ready for independent application of endocrine system ideas. The Reinforcement version is for students who need additional vocabulary or concept support. Three of the six options are swapped for projects with a tighter vocabulary tie-in, and "design your own" is replaced with "collaborate with the teacher" so kids aren't pitching cold.

✅ Evaluate

The Evaluate phase wraps the unit with a formal assessment. It's not all bubble-in. Several questions show students labeled diagrams of the endocrine glands and ask them to identify the gland, the hormone, and the feedback loop in action.

The full assessment has 12 questions across five formats:

• Multiple choice (4 questions) covering the major glands, hormones, the pathway of a hormone through the bloodstream, and the difference between endocrine and nervous system signaling
• Hotspot / visual (2 questions) where students click the pancreas on a body diagram and identify the gland that controls metabolism
• Multiselect (2 questions) where students pick all of the glands that produce hormones controlling blood sugar, and all of the structures involved in the body's fight-or-flight response
• Short answer (2 questions) on how a negative feedback loop maintains homeostasis and on how hormones know which cells to act on (target cells and receptors)
• Multipart scenario (2 questions) with a real-world example (a student who just ate lunch) where students identify the gland that responds, the hormone released, and the way blood sugar returns to normal

A modified version is included for students who need additional support. Fewer multiple-choice distractors and sentence-starter scaffolds on the short-answer items.

If you've taught all five phases, this assessment shouldn't surprise anyone. It's a chance for kids to show you they get it.