Thermal Energy in Systems Lesson Plan (TEKS 7.8A): A Complete 5E Lesson for Conduction, Convection, and Radiation

Inside the Thermal Energy in Systems 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 Thermal Energy in Systems 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 hook using a mug of hot water (or any safe warm object). Each student gets a student sheet and walks through three observations: hand on the side of the mug, hand held above the opening, and hand held a few inches in front of the mug. They sketch what they feel and what they see, and they try to explain why their hand feels warm in three very different ways.

By the end of the period, students have a sketch of all three transfer methods on their student sheet, drawn in their own hand, and they can describe in their own words how the three are different. Nobody has heard the words "conduction," "convection," or "radiation" yet. That's the point. They're walking into the rest of the unit with three real experiences to attach the vocabulary to.

What's included in the Engage:

• Teacher directions for the hot mug investigation
• Printable student observation sheet
• Answer key for the discussion questions
• Four learning objective slides (standard verbatim, "Investigate" highlighted, "I CAN...", and "WE WILL...")
• An 18-card illustrated Physics Word Wall in English and Spanish covering the full unit vocabulary

🔬 Explore

The Thermal Energy 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 conduction, convection, and radiation and answer guided questions.
• 📖 Read It! — A one-page reading passage at two differentiated levels, with a Spanish version included.
• 🔬 Explore It! — A hands-on investigation (the heart of the Station Lab) where students test which materials conduct heat best and observe convection in colored water.
• 💻 Research It! — Reference cards with diagrams of all three transfer methods, examples of insulators vs. conductors, and real-world systems where multiple transfer methods happen at once.

The four output stations:

• 📋 Organize It! — A 12-card sort where students physically place scenarios under conduction, convection, or radiation.
• 🎨 Illustrate It! — Students draw a graphic organizer of all three transfer methods with a labeled example for 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 Thermal Energy 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 touched a warm mug, watched colored water swirl in a beaker, and felt heat coming off something they weren't touching. They have a working understanding before you start naming things. The discussions get deeper, the questions get sharper, and you spend less time defining and more time pushing their thinking.

The Thermal Energy Presentation walks 7th graders through the full scope of TEKS 7.8A, one concept at a time, with particle diagrams on nearly every slide. The deck opens with a quick reset on what thermal energy actually is (the energy of moving particles inside a substance) and then introduces the idea that thermal energy can be transferred in three different ways. From there it zooms in on each method one at a time.

Students learn that conduction is the movement of heat through direct contact between particles. Fast-moving particles bump into slower ones and pass along their energy. Solids, especially metals, are great conductors. A metal spoon in hot soup, a heating pad on your back, and a hand resting on a hot poker are all conduction. Convection happens inside a fluid (a liquid or a gas) because warmer fluid is less dense than cooler fluid. Warmer fluid rises, cooler fluid sinks, and a circulating current forms. Macaroni rising and falling in a pot of boiling water, hot magma rising in Earth's mantle, and hot air rising in the atmosphere are all convection. Radiation is thermal energy traveling as electromagnetic waves. It does not need particles to travel through, which is how sunlight crosses the vacuum of space. Laying out in the sun, feeling the warmth of a bonfire on your face, and the heat coming off a light bulb are all radiation.

The deck includes a built-in Quick Action INB where students match each transfer method to the right location on a pot of boiling water sitting on a stove. The pot itself? Conduction. The water rolling and rising? Convection. The heat you feel without touching the pot? Radiation. One image, three methods, and every kid in the room can see how they happen at the same time in real systems. The lesson then applies the same thinking to Earth's mantle, where convection currents drive plate motion and conduction warms the crust from below.

What makes the Thermal Energy Presentation different from a typical physics 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 show up throughout, and Think About It prompts push deeper into bigger ideas like analyzing all three transfer methods at a campfire or evaluating which methods are happening in Earth's mantle. The deck closes with a Check for Understanding tied back to the Essential Questions: How does energy transfer into and out of systems? and How do conduction, convection, and radiation transfer energy?

The Explain materials in this product include:

• An editable 19-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 thermal energy transfer and put it into a project of their choosing. In this 7th grade physics lesson, that's a Student Choice Project board with six different project options plus a "design your own" pathway.

Students might design and "build" (on paper or with materials) the perfect insulated lunchbox and explain which transfer methods their design blocks, create a children's book that explains how the sun warms the Earth across the vacuum of space, or record a short cooking show that narrates conduction, convection, and radiation happening in the kitchen. 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 conduction, convection, and radiation 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 7.8A and you actually get to see what they understand about thermal energy transfer.

The rubric (the part teachers actually want)

Every project, no matter which option a student picks, is graded on the same rubric with 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) — Diagrams and explanations 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. 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 scenario image (a pot on a stove, a campfire, Earth's mantle) and ask them to identify which transfer methods are happening and explain why.

The full assessment has 12 questions across five formats:

• Multiple choice (4 questions) covering definitions of each transfer method, examples, conductors vs. insulators, and the role of a medium
• Hotspot / visual (2 questions) where students click the part of a system showing a target transfer method and describe the energy flow
• Multiselect (2 questions) where students pick all the transfer methods happening in a real-world system
• Short answer (2 questions) on why radiation can travel through a vacuum but conduction and convection can't
• Multipart scenario (2 questions) with a 3-student debate where kids identify which reasoning correctly identifies the transfer methods in play

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.