Electricity in Closed Circuits Lesson Plan (TEKS 4.8C): A Complete 5E Lesson on Electrical Energy and Circuits
Here's the day-one demo I'd lead with for TEKS 4.8C. Hold up a single AA battery, a small bulb, and two short wires. Connect everything in front of the class so it forms a complete loop from one end of the battery, through one wire, into the bulb, out the other side of the bulb, through the other wire, and back to the battery. The bulb lights up. The room cheers. Then pull one wire loose. The bulb goes off. The room groans. Closed path on, open path off.
That's the whole standard, packaged into 30 seconds. A circuit only works if the path is closed, meaning every piece is connected end to end with no gaps. As soon as you open the loop, the energy can't make it all the way around, and the bulb is done. The TEKS also asks 4th graders to notice what the circuit produces when it works: light and thermal energy (the bulb warms up after a minute). Both came from electrical energy moving through the wires.
That's the core idea behind this 5E lesson for TEKS 4.8C. The verb in the standard is demonstrate and describe. You can't get there from a diagram alone. Kids need batteries, wires, and bulbs in their hands.
Inside the Electricity in Closed Circuits 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 Electricity in Closed Circuits 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 challenge: get the bulb to light. Each small group gets a battery, a small bulb in a holder, and two wires with alligator clips. No instructions on how to connect them. Just the challenge. Following the step-by-step teacher prompts, they figure out (with some hints) how to build a circuit that closes the loop.
By the end of the period, every kid has lit a bulb, drawn the working circuit on their student sheet in their own hand, and felt the warm bulb glass with a careful finger. Nobody has heard the words "closed circuit" or "electrical current" yet. That's the point. They're walking into the rest of the unit knowing what a working circuit looks like, even before they have the vocabulary for it.
What's included in the Engage:
- Teacher directions for the light-the-bulb circuit challenge
- Printable student observation sheet
- Answer key for the discussion questions
- Four learning objective slides (standard verbatim, "I CAN...", "WE WILL...", and essential question)
- An illustrated Energy Word Wall in English and Spanish covering the full unit vocabulary
🔬 Explore
The Electricity in Closed Circuits 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 how electrical energy travels in a closed circuit and answer guided questions.
- 📖 Read It! — A one-page reading passage on circuits at two differentiated levels, with a Spanish version included.
- 🔬 Explore It! — A hands-on circuit-building station where students light a bulb, break the circuit, and test what happens when different materials are placed in the gap.
- 💻 Research It! — Reference cards with circuit diagrams showing open and closed circuits, plus examples of common loads (bulb, motor, buzzer).
The four output stations:
- 📋 Organize It! — A card sort where students match circuit diagrams to labels (open vs. closed, working vs. not working).
- 🎨 Illustrate It! — Students draw their own labeled circuit diagram showing the battery, wires, switch, and bulb, with arrows showing the path of the current.
- ✍️ Write It! — Three open-ended questions in complete sentences where kids explain why a closed path matters.
- 📝 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 Electricity in Closed Circuits Station Lab walkthrough 8 stations, materials list, teacher tipsThe 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 lit a bulb, broken the circuit on purpose, and tested whether a rubber band closes the loop the way a copper wire does. 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 Electricity in Closed Circuits Presentation walks 4th graders through the full scope of TEKS 4.8C, one idea at a time. The deck opens with a quick reset on the forms of energy (sound, light, mechanical, thermal) and zeroes in on electrical energy: energy from the flow of an electric charge through a conductor. From there it builds the framework for understanding what's happening inside a working circuit.
Students learn that electricity is the flow of electric charge, and a working circuit needs three things in a complete loop: an energy source (a battery or wall outlet), a conductor (wires) for the energy to travel through, and a load (the bulb, motor, or buzzer that uses the energy). The deck explains that the movement of electrical energy through a circuit is called an electric current. The current flows from the energy source, through the wires, into the load, out the other side of the load, and back to the source. The path is a loop, and the energy doesn't stop along the way.
Then the lesson covers the heart of the TEKS: open vs. closed circuits. A closed circuit has a complete path. Electrical current can flow all the way around the loop, and the load turns on. An open circuit has a gap somewhere, even a tiny one. Current can't make it across the gap, so the load stays off. The deck includes the water-hose analogy: a closed circuit is like a hose with water flowing through it. Cut the hose and the water stops. Same idea. Finally, the lesson zooms in on the two forms of energy the TEKS calls out specifically: light energy (lightbulbs, flashlights, LED screens, patio lights) and thermal energy (toasters, electric stoves, hair dryers, electric heaters). Both come straight from electrical energy being changed into another form by the load.
What makes the Electricity in Closed Circuits Presentation different from a typical physical science 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 (vocabulary drag-and-drop matching terms to definitions, sorting circuit diagrams into open vs. closed, labeling whether a load is working or not) show up throughout, and Think About It prompts push deeper into bigger ideas like the classroom-light-switch question and a post-storm power outage troubleshooting scenario. The deck closes with a Check for Understanding tied back to the Essential Questions: How could you prove that electricity must travel through a closed path? How does electrical energy produce light and thermal energy?
The Explain materials in this product include:
- An editable 24-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 closed circuits and put it into a project of their choosing. In this 4th grade physical science lesson, that's a Student Choice Project board with six different project options plus a "design your own" pathway.
Students might design a working flashlight using a battery, wires, a switch, and a bulb and write up their wiring plan, build a circuit diagram of three different household devices (a lamp, a toaster, a fan) showing the path of the current, or create a comic strip where a character troubleshoots why a string of holiday lights won't turn on. 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 closed circuits 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 4.8C and you actually get to see what they understand about how electrical energy travels.
The rubric (the part teachers actually want)
Every project, no matter which option a student picks, is graded on the same 100-point 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 closed circuits. 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 circuit diagram and ask them to identify whether it's open or closed, predict whether the bulb will light, and explain why.
The full assessment has 12 questions across five formats:
- Multiple choice (4 questions) covering circuit vocabulary, examples of light and thermal energy from electricity, and open vs. closed paths
- Hotspot / visual (2 questions) where students circle the closed circuit in a set of diagrams and describe how the current is flowing
- Multiselect (2 questions) where students pick all components needed to make a working circuit
- Short answer (2 questions) on what happens to electrical energy when it reaches the bulb
- Multipart scenario (2 questions) with a household troubleshooting scenario where kids identify what's broken in a non-working circuit and explain how to fix it
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.
How everything fits together
If you want the whole experience (Engage hook, the Station Lab as the Explore, the Explain day with Presentation and interactive notebook, the Student Choice Elaborate, and the Evaluate assessment all in one download), that's the Electricity in Closed Circuits Complete 5E Science Lesson.
If you only need the one-day hands-on activity, the Station Lab works as a standalone. Most teachers buy the full 5E because the Station Lab works harder when it's bookended by a strong Engage and a follow-up Explain. But both are honest options.
What you need to teach Electricity in Closed Circuits (TEKS 4.8C)
Materials beyond what's in the download:
- Small batteries (AA or D cells, one per group) for the energy source
- Small bulbs in holders (one per group) for the load
- Two alligator-clip wires per group for the conductor
- Optional: a basic switch per group for opening and closing the circuit
- A set of test materials (paperclip, aluminum foil, plastic spoon, rubber band, cardboard strip) for testing what closes a circuit
- Pencils, colored pencils or markers, and printed student pages
- A device with internet for the Watch It! station and the slide deck
Standard covered: Texas TEKS 4.8C — Demonstrate and describe how electrical energy travels in a closed path that can produce light and thermal energy. See the full standard breakdown →
Grade level: 4th grade science
Time: About 10 class periods of 45 minutes each, done with fidelity. The product also ships with a compressed sample unit plan if you need to move faster.
Common misconceptions this lesson clears up
- "A bulb just needs a battery to light up"
A bulb doesn't light up just because you set it next to a battery. The electrical energy has to be able to travel out of the battery, through the bulb, and back to the battery. That's a closed path. If the path is broken anywhere, even by a tiny gap, the bulb won't light. Touching a bulb to a battery on one side won't work. You need a complete loop.
- "Electricity gets used up by the bulb"
The electrical energy travels all the way through the closed path. It goes out of the battery, through one wire, into the bulb, out the other side of the bulb, and back to the battery through the other wire. Some of the energy turns into light and some turns into heat at the bulb. But the path itself stays complete. The energy doesn't pile up and stop.
- "A circuit only makes light, not heat"
A working circuit produces both light AND thermal energy. The bulb gets warm if you let it run for a minute. Touch the glass carefully and you can feel it. The TEKS specifically calls out both kinds of energy. That warmth is real and it's coming from the electrical energy traveling through the bulb's tiny wire inside.
- "Any object can be part of a circuit"
Only certain materials can be part of a closed path. The wires, the battery contacts, and any added piece have to all be conductors. If you put a rubber band, a cardboard strip, or a plastic ruler into your circuit, the energy can't get through and the bulb won't light. Wires, paperclips, and aluminum foil work. Plastic, rubber, and wood don't.
What's included in the Electricity in Closed Circuits 5E Lesson download
When you buy the Electricity in Closed Circuits Complete 5E Lesson, you get a single download with the whole unit:
- ✅ Engage materials — teacher directions, student observation sheet, answer key, four learning objective slides, illustrated Energy Word Wall (English + Spanish)
- ✅ The full Station Lab — 8 stations + 1 challenge, print and digital, two reading levels, Spanish Read It!
- ✅ Explain materials — editable 24-slide Presentation at two differentiated levels (with built-in Brain Breaks, Quick Action INB tasks, and Think About It prompts), guided fill-in-the-blank student notes handout with answer key, Paper Interactive Notebook (English + Spanish), Digital Interactive Notebook at two levels with answer keys
- ✅ Elaborate (Student Choice Projects) — 6 project options + design-your-own, plus a Reinforcement version with vocabulary-focused alternatives, 5-category rubric included
- ✅ Summative assessment — full 12-question version and modified version with sentence-starter scaffolds, both with answer keys
- ✅ Sample unit pacing guide — day-by-day plan for the full 5E lesson
A couple of real-talk tips from running this lesson
1. Test every circuit kit the morning of the lesson.
Dead batteries and burnt-out bulbs are the number one circuit-lesson killer. Spend five minutes connecting each kit on your desk and confirming the bulb lights. If a kit doesn't work, the kids working with it will spend 20 minutes frustrated and miss the lesson entirely.
2. Hold off on switches until day two.
Throwing a switch in on day one adds one more thing to troubleshoot. Start with just battery, wires, and bulb. Once kids can light the bulb in their sleep, then add a switch and watch them connect "closed circuit on" to flipping the wall light switch in their bedroom.
3. Save 10 minutes at the end of the Station Lab day for a class debrief.
Ask: "What happens at your house when the power goes out? What's broken in that circuit?" That five-minute conversation is the bridge to the Explain day.
Get the Electricity in Closed Circuits 5E Lesson
Or if you only need the one-day hands-on Station Lab:
(The Station Lab is included in the full 5E Lesson)
Frequently asked questions
Does this cover all of TEKS 4.8C?
Yes. The full standard is addressed across all five phases, with hands-on demonstration of closed circuits and both forms of energy produced (light and thermal).
What do my students need to know before this lesson?
A basic understanding of energy and conductors from 4.8A and 4.8B earlier in the year. If they can identify a conductor and an insulator, they're ready.
How long does it take to teach?
Done with fidelity, about 8 class periods of 45 minutes each: one day for the Engage hook, two days for the Station Lab, two days for the Presentation and Interactive Notebook, two days for the Student Choice Project, and one day for review and the assessment.
Do I need special supplies?
Small batteries, small bulbs in holders, and alligator-clip wires (a basic K-5 circuit kit covers it). Most elementary STEM closets already have these or can borrow from another grade level.
Does this work for digital classrooms?
Yes. Every component has a digital version. The Station Lab is fully digital-ready (Google Slides), the Presentation works in Google Slides, and the Student Choice Projects can be submitted as videos, slide decks, or written work.
Is this 5E lesson aligned to NGSS too?
It aligns with elementary physical science standards on energy transfer (4-PS3-2, 4-PS3-4). Built TEKS-first, but the closed-circuit ideas carry over.
Related resources
- Texas teacher? See the full TEKS 4.8C Electricity in Closed Circuits standard page with phenomena, free engagement ideas, and the complete standard breakdown.
- Want just the Station Lab walkthrough? Read the Electricity in Closed Circuits Station Lab post for the full 8-station breakdown.
