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Texas Science Teacher Resource Hub

Free scope and sequences, TEKS breakdowns, phenomenon ideas, and engagement activities for the 2024 Texas science standards.

Chris Kesler
I'm Chris Kesler, a former award-winning Texas middle school science teacher. This is the site I wish I'd had in the classroom. One hub with TEKS breakdowns, scope and sequences, phenomenon starters, engagement ideas, and resources, all aligned to the standards you actually teach.
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Pick your grade level and go straight to your TEKS standards, aligned resources, and teaching tools.

All standards updated for the 2024 TEKS revision
TEKS Details | Texas Hub Module

6th Grade TEKS Standards

Click any standard to see what it means, how to teach it, where students get stuck, and aligned resources.

Matter & Properties (6.6)
6.6A Matter & Kinetic Energy 6.6B Pure Substances & Mixtures 6.6C Classify Elements 6.6D Comparing Density 6.6E Evidence of Chemical Changes
Force, Motion & Energy (6.7)
6.7A Forces in the Real-World 6.7B Calculating Net Force 6.7C Newton's Third Law of Motion
Energy (6.8)
6.8A Compare & Contrast Energies 6.8B Energy Transformations in Systems 6.8C Energy of Waves
Earth & Space (6.9)
6.9A Model Earth's Tilt & Seasons 6.9B Predicting Tides
Earth's Structure (6.10)
6.10A Differentiate Between Earth's Spheres 6.10B Modeling Layers of Earth 6.10C Processes in the Rock Cycle
Resources (6.11)
6.11A Resource Management 6.11B Managing Energy Resources
Ecosystems (6.12)
6.12A Biotic & Abiotic Competition 6.12B Ecological Relationships 6.12C Hierarchy of Ecosystems
Organisms (6.13)
6.13A Development of Cell Theory 6.13B Comparing Organisms 6.13C Variations & Survival
TEKS S.6.6A • Matter & Properties

Matter & Kinetic Energy

The Standard

"Compare solids, liquids, and gases in terms of their structure, shape, volume, and kinetic energy of atoms and molecules."

💡 What This Standard Actually Means

The Key Verb

"Compare". Students are looking at solids, liquids, and gases side by side and explaining how they're alike and how they're different. The standard tells you exactly which features to focus on: structure (how the particles are arranged), shape (whether the substance holds its own shape or takes the shape of its container), volume (whether it has a fixed amount of space or fills whatever it's in), and kinetic energy of atoms and molecules (how much the particles are moving). Students should be able to take any everyday substance and place it in the right state with reasons. Instruction can take many forms, such as particle model drawings, sorting cards, T-charts, hands-on observation stations, and short writing prompts.

All matter is made of tiny particles, and those particles are always moving. The energy of that motion is called kinetic energy. The state a substance is in (solid, liquid, or gas) comes down to how its particles are arranged and how much they're moving.

In a solid, particles are packed close together in a fixed structure, vibrating in place. That's why a solid keeps its own shape and its own volume. A textbook on a desk doesn't change shape or get bigger just because you move it. In a liquid, particles still touch but they slide past each other freely. A liquid takes the shape of whatever container it's in, but the volume stays the same. Pour 250 mL of juice into a tall glass or a wide bowl and you still have 250 mL. In a gas, particles have so much kinetic energy that they break away from each other and zip around with lots of space in between. A gas spreads out to fill its whole container, so neither shape nor volume is fixed.

The pattern that ties it together is energy. Solids have the lowest particle kinetic energy. Liquids have more. Gases have the most. Add energy (heat) and particles speed up enough to push a substance from solid to liquid to gas. Take energy away and the particles slow back down. Students should walk away able to compare any two states using structure, shape, volume, and particle motion.

💬 From Chris's Classroom

The demo that never missed for me was the food coloring race. I'd put two clear cups on the front table, one with ice water and one with hot tap water. Same dropper, one drop of food coloring in each, same time. The hot cup turned dark in seconds while the cold cup took forever. Kids would lean in, and that's when I'd drop the word particles. "What's going on in the hot cup that isn't happening in the cold one?" Then we'd sketch particle diagrams for each. That one demo did more work for me on this standard than any lecture slide ever did.

⚠️ Misconceptions Your Students May Have

These are some of the most common misconceptions. Knowing what to look for can help you get ahead of them.

×

"Particles in a solid aren't moving at all"

✓

Students see a rock or an ice cube and assume the particles inside are frozen in place. Particles in a solid are still vibrating, just in a tight, fixed arrangement. They're not free to move around, but they're not sitting still either. Drawing a solid as dots with tiny jiggle marks helps this stick.

×

"Heat and temperature are the same thing"

✓

This one trips up even older students. Temperature measures the average kinetic energy of particles. Heat is the transfer of energy from one substance to another because of a temperature difference. A lit match has a higher temperature than a bathtub of warm water, but the bathtub has way more total heat energy because it has far more particles.

×

"Gases don't have any mass"

✓

Because gas particles spread out and can't usually be seen, students often decide a gas isn't really there. But gases are made of particles with mass, just spread far apart. A flat basketball and a fully inflated one have different masses because of the air inside. Weighing both on a sensitive scale makes the point fast.

×

"When a liquid boils, the particles change into something new"

✓

Students sometimes think the steam rising off boiling water is a different substance. Liquid water and water vapor are both made of the same water particles. The particles didn't change, they just gained enough energy to separate and move as a gas. Same particles, different amount of kinetic energy.

📓 Teaching Resources for 6.6A

These resources are aligned to this standard.

Complete 5E Lesson
Matter & Kinetic Energy Complete Science Lesson
The full unit for 6.6A: differentiated station labs, editable presentations, interactive notebooks (English + Spanish), student-choice projects, and assessments. Built on the 5E model.
⏱ Best for: Full unit coverage • Multiple class periods
Preview → Buy →
Station Lab
Matter & Kinetic Energy Station Lab
9-station hands-on lab covering particle motion, temperature, and states of matter with input stations (Explore It!, Watch It!, Read It!, Research It!) and output stations (Organize It!, Illustrate It!, Write It!, Assess It!). Print and digital. English and Spanish.
🔬 Best for: Core instruction • 1-2 class periods
Preview → Buy →
Student Choice Projects
Matter & Kinetic Energy Student Choice Projects
Choice board with nine project options plus a "design your own" pathway. Students demonstrate their understanding of particle motion, temperature, and states of matter through writing, building, illustrating, presenting, or digital formats.
🎓 Best for: Project-based assessment • 2-3 class periods
Preview → Buy →

🌎 Phenomenon Ideas for 6.6A

Use these real-world phenomena to anchor your lesson. Show students the phenomenon first, let them wonder, then build toward Matter & Kinetic Energy as the explanation.

🔎
Phenomenon 1

Steam Rising Off a Hot Cup of Coffee

Pour hot coffee into a mug and you can see wispy steam drifting upward. Let the cup sit for 20 minutes and the steam goes away, even though there's still liquid in the cup. A glass of ice water sitting right next to it doesn't make any steam at all. The same water particles can behave in wildly different ways depending on what's going on with their energy.

💬 Discussion Prompt

"The hot coffee and the ice water are both mostly water. Why does steam come off one and not the other? What's different about the particles in each cup?"

🔎
Phenomenon 2

Popcorn in the Microwave

A hard kernel sits quiet on the counter. Drop it in the microwave for two minutes and it explodes open. Inside each kernel is a tiny bit of water. When the microwave heats the kernel, the water particles inside gain so much energy that they push the hard shell from the inside until it bursts.

💬 Discussion Prompt

"The kernel didn't move when it was on the counter. What changed about the water particles inside it when the microwave turned on? Why did that cause the shell to burst?"

🔎
Phenomenon 3

A Deflated Ball Left in a Hot Car

You leave a slightly soft basketball in the backseat on a hot Texas afternoon. Come back a few hours later and the ball feels firmer. Nobody pumped any new air in. Same ball, same air inside, but the pressure pushing outward has changed. Something about the particles has to be different.

💬 Discussion Prompt

"No air was added to the ball. So how did it get firmer? What happened to the air particles inside when the car heated up?"

💡 Free Engagement Ideas for 6.6A

01

Food Coloring Race

Set up two clear cups, one with ice water and one with hot tap water. At the same instant, drop one drop of food coloring in each. Students time how long it takes for the color to spread evenly. The hot cup wins every time because its particles are moving faster and bump into the dye particles more often.

Materials: 2 clear cups, hot tap water, ice water, food coloring, stopwatch
02

Balloon on a Bottle

Stretch a deflated balloon over the mouth of a plastic bottle. Place the bottle in a bowl of hot tap water for a few minutes and watch the balloon inflate. Then move it to ice water and watch it collapse. The air didn't leave or enter. Particle motion just changed.

Materials: Plastic bottle, balloon, hot water, ice water, bowl
03

Particle Dance Simulation

Clear a space in the room. Students become particles. In "solid mode" they stand in a tight grid and jiggle in place. In "liquid mode" they stay close but slide past each other. In "gas mode" they spread out and move freely. Call out states and temperatures and have them adjust.

Materials: Open floor space, masking tape grid (optional)
04

Bag Full of Smell

Place a strong-smelling item (orange peel, vanilla, coffee grounds) in a sealed plastic bag. Pass the bag around. Students can't smell it through the plastic. Then open the bag at one end of the room and time how long it takes students in the back to smell it. Discuss how gas particles have to travel through the air to reach their noses.

Materials: Zip-top bag, strong-smelling item, stopwatch
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Practical, week-by-week scope and sequences for grades 4-8. These tell you what to teach and when to teach it. Updated for the 2024 TEKS.

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