Organism Structures & Functions Lesson Plan (TEKS 5.13A): A Complete 5E Lesson for Comparing Survival Across Species

Inside the Organism Structures & 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 Organism Structures & 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 shared environment activity. Students see a photo of a single habitat (a Texas pond, a desert, a coral reef, or the Arctic) and a set of species photos that all live in that habitat. Each student or group works through a guided observation sheet with two columns: "Structure I see" and "Job it's probably doing." They fill it out for three species in the same environment.

By the end of the period, kids have a side-by-side comparison sheet showing how three species in the same place solve survival differently. Nobody has heard the vocabulary lecture yet. They walk into the rest of the unit with a working model of comparison built in.

What's included in the Engage:

• Teacher directions for the shared environment comparison activity
• Printable student observation sheet
• Answer key for the discussion questions
• Four learning objective slides (standard verbatim, "Analyze" highlighted, "I CAN...", and "WE WILL...")
• An illustrated Organism Structures Word Wall in English and Spanish covering the full unit vocabulary

🔬 Explore

The Organism Structures & 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 comparing how different species survive in the same environment and answer guided questions.
• 📖 Read It! — A one-page reading passage at two differentiated levels, with a Spanish version included.
• 🔬 Explore It! — A side-by-side species comparison where students examine model organisms or detailed images and chart the structures and functions of each.
• 💻 Research It! — Reference cards on plant structures, animal structures, and how those structures fit different habitats (pond, desert, forest, ocean).

The four output stations:

• 📋 Organize It! — A card sort where students place each structure under the species and habitat it belongs to, then explain its function.
• 🎨 Illustrate It! — Students pick one environment and draw three species that live there, labeling at least two structures per species with the function of each.
• ✍️ Write It! — Three open-ended questions in complete sentences (this is where you see who really gets it).
• 📝 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 Organism Structures & 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 compared real species side by side. 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 Organism Structures & Functions Presentation walks 5th graders through the full scope of TEKS 5.13A, one concept at a time, with photos of real organisms in real habitats on nearly every slide. The deck opens with a reset on what a structure is (a body part or feature), what a function is (the job that structure does), and what a habitat or environment is. From there it builds out the framework: every plant and animal has structures that perform functions, and those functions help the organism survive in its habitat.

Students learn that plants have specific structures with specific jobs. Roots soak up water and nutrients from the soil and anchor the plant in place. Stems hold the plant upright, support the leaves, and carry water from the roots to the leaves. Leaves absorb sunlight to make food through photosynthesis and help the plant manage moisture. Different plants in different environments have different versions of these same structures (a cactus stem is thick to store water, a vine stem is long and flexible to climb).

Animals have their own set of structures. Legs are for walking, jumping, balancing, and circulating blood. Claws are for digging, hunting, balancing, and protecting. Wings are for flying, swimming, balancing, and keeping warm (a penguin's wings don't fly, they swim). Students also see less obvious structures: gills for getting oxygen out of water, fur for warmth and camouflage, hard shells for protection. The deck includes a built-in INB activity where students compare structures between very different species (a flamingo and a dolphin, a frog and a heron) that share an environment.

For every comparison, students see two species in the same habitat with the structures labeled and the functions explained. That repetition (same environment, different species, side-by-side comparison) is what bakes the analyze verb of TEKS 5.13A into long-term memory.

What makes this Presentation different from a typical organism slideshow is that kids are doing something on almost every single 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, Quick Action INB tasks (the structure-function matching, the species-comparison sort, the design-an-organism-for-a-habitat activity) show up throughout, and Think About It prompts push deeper into bigger ideas like why two finches in the same forest might have different beak shapes for different foods. The deck closes with a Check for Understanding tied back to the Essential Questions: How do the different structures of plants and animals help them to survive? Do organisms in the same environment have identical structures to accomplish the functions needed to help them survive?

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 organism structures and functions and put it into a project of their choosing. In this 5th 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 three brand-new species that all live in the same imaginary habitat (a planet with lava rivers, an underwater cave system, a sky island) and explain how each species' body fits its job in that shared environment. Or they might pick a real Texas habitat and write a field guide comparing four species that live there, with detailed analysis of structures and functions for each. 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 organism structures and functions 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 5.13A and you actually get to see what they understand about how species survive together.

The rubric (the part teachers actually want)

Every project, no matter which option a student picks, is graded on a five-category rubric: vocabulary use, key concepts, presentation, clarity, and accuracy. 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 comparison of structures across species. 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 hand students a habitat image with multiple species visible and ask them to compare structures across two of those species and explain how each one survives.

The full assessment has 12 questions across five formats:

• Multiple choice (4 questions) covering structure-function vocabulary, habitat-organism matching, and comparison concepts
• Hotspot / visual (2 questions) where students label structures on two different organisms in the same habitat and explain the function of each
• Multiselect (2 questions) where students pick all the structures that serve a given function across multiple species
• Short answer (2 questions) on why two species can survive in the same habitat with very different bodies
• Multipart scenario (2 questions) with an environment description where kids analyze how three species' structures fit the survival challenges of that habitat

A modified version is included for students who need additional support. Fewer multiple-choice distractors, 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.