Matter & Energy in Food Webs Lesson Plan (TEKS 4.12B): A Complete 5E Lesson for Producers, Consumers, and Decomposers

Inside the Matter & Energy in Food Webs 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 the teacher waiting to be told the answer. The Matter & Energy in Food Webs 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 the yarn web activity. Each kid wears an index card with a different organism: grass, oak tree, deer, hawk, rabbit, snake, mouse, mushroom, worm, sun. The student wearing the Sun card holds a ball of yarn and tosses it (keeping a piece in hand) to every plant in the room. Plants then toss it to whatever eats them. Consumers pass it to whatever eats them. Eventually decomposers get the yarn from anything that "dies." Within five minutes, the room is a giant tangled web of yarn connecting everyone to everyone else.

Then comes the magic moment. Pull on the Sun's yarn and ask, "What just happened to everyone connected to the Sun?" The whole web tugs. Cut the yarn between the rabbit and the hawk and ask the hawk, "Where's your food now?" Kids feel a food web instead of just looking at one. Nobody has heard a vocabulary lecture yet. That's the point.

What's included in the Engage:

• Teacher directions for the yarn web activity
• Printable organism cards and student observation sheet
• Answer key for the discussion questions
• Learning objective slides (standard verbatim, "Describe the cycling and flow" highlighted, "I CAN...", and "WE WILL...")
• An illustrated Food Webs Word Wall in English and Spanish covering the full unit vocabulary

🔬 Explore

The Matter & Energy in Food Webs 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 food webs and answer guided questions.
• 📖 Read It! — A one-page reading passage at two differentiated levels, with a Spanish version included.
• 🔬 Explore It! — The hands-on activity where students build a food web using picture cards and arrows, then trace the energy and matter pathways with markers.
• 💻 Research It! — Reference cards on the Sun, producers, consumers (primary and secondary), and decomposers, with examples of each.

The four output stations:

• 📋 Organize It! — A card sort where students place organisms (grass, hawk, mushroom, deer, worm) into producer, consumer, or decomposer columns.
• 🎨 Illustrate It! — Students draw their own food web of at least 6 organisms with arrows showing the direction of energy flow.
• ✍️ Write It! — Three open-ended questions in complete sentences (this is where you see who really understands the difference between flow of energy and cycling of matter).
• 📝 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 Matter & Energy in Food Webs 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 built a yarn web with their bodies and a card web with their hands. They have a working understanding before any naming happens. The discussions get deeper, the questions get sharper, and you spend less time defining and more time pushing their thinking.

The Matter & Energy in Food Webs Presentation walks 4th graders through the full scope of TEKS 4.12B, one role at a time. The deck opens with a quick reset on how energy moves through living things and then introduces the difference between a food chain (a single straight line) and a food web (a whole network of connected chains). That distinction matters because the TEKS specifically says "food webs," not "food chains."

Students learn the four roles named in the standard. The Sun is where every food web starts. Sunlight is the original energy source. Producers are plants that capture that sunlight and turn it into food (sugar). They're at the bottom of every food web because everything else depends on them. Consumers are animals that eat producers or other consumers. Primary consumers eat plants (rabbits, grasshoppers, deer). Secondary consumers eat primary consumers (snakes, foxes, hawks). The deck breaks down herbivores (plant eaters), carnivores (meat eaters), and omnivores (both) so kids have a vocabulary for what each consumer eats. Decomposers are organisms like mushrooms, bacteria, worms, and beetles that break down dead plants and animals into nutrients that return to the soil.

Then comes the big idea. The flow of energy moves in one direction: Sun → producer → primary consumer → secondary consumer. Energy gets used up as it goes. The cycling of matter goes in a loop: from soil into producers, into consumers, then back to the soil through decomposers. Energy is one-way. Matter is recycled. The Presentation reinforces this with arrows on every food web slide showing the direction of energy flow and a separate set of arrows showing the matter cycle.

What makes the Matter & Energy in Food Webs Presentation different from a typical 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 (a build-a-food-chain drag-and-drop, a Venn diagram comparing food chains and webs, a primary-consumer circle activity) show up throughout, and Think About It prompts push deeper into bigger ideas like what happens to the system if grasshoppers disappear. The deck closes with a Check for Understanding tied back to the Essential Question: How can we model the flow of energy in an ecosystem?

The Explain materials in this product include:

• An editable 22-slide 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 food webs and the flow of energy and put it into a project of their choosing. In this 4th grade Life Science lesson, that's a Student Choice Project board with six different project options plus a "design your own" pathway.

Students might build a 3-D mobile food web with at least 8 organisms and color-coded energy and matter arrows, design a children's book that teaches a kindergartner about producers and consumers, write a script for a play where the Sun, a plant, a deer, a wolf, and a mushroom all talk about their jobs in the ecosystem, or create a poster showing what happens to a food web when one organism is removed. 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 the cycling of matter and flow of energy 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 4.12B and you actually get to see what they understand about food webs.

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. 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 food web image and ask them to identify the producers, the primary consumers, the decomposers, and the direction of energy flow.

The full assessment has 12 questions across five formats:

• Multiple choice (4 questions) covering producer, consumer, and decomposer vocabulary plus the role of the Sun
• Hotspot / visual (2 questions) where students circle the producer in a food web image and identify which arrow shows energy flow vs. matter cycling
• Multiselect (2 questions) where students pick all the primary consumers from a set of organisms, then pick all the decomposers
• Short answer (2 questions) on what happens if the producers disappear and why decomposers are important to the ecosystem
• Multipart scenario (2 questions) with a food web missing one organism where kids predict the impact and explain whether energy or matter is affected most

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.