Hero | Texas Hub Module

Texas Science Teacher Resource Hub

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

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.

Get Free Pacing Guide

🚀 Jump to Your Grade

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

8th Grade TEKS Standards

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

TEKS S.8.6C • Matter & Properties

Properties of Water

The Standard

"Describe the properties of cohesion, adhesion, and surface tension in water and relate to observable phenomena such as the formation of droplets, transport in plants, and insects walking on water."

💡 What This Standard Actually Means

The Key Verb

"Describe" and "relate". Students describe three specific properties of water and connect them to things they can actually see happening. The standard's "such as" list signals where to focus your students: cohesion, adhesion, and surface tension, related to the formation of droplets, transport in plants, and insects walking on water. Students should be able to define each property and tie it to a concrete observable phenomenon. Instruction can take many forms, such as quick demos, labeled diagrams, observation journals, and property-to-example matching.

Water seems ordinary until you look closely at how it behaves. Drop a bead of water on a waxed car and it pulls itself into a tight little dome. Place a paper towel into a puddle and the water climbs up the towel against gravity. Set a needle gently on a glass of water and it can sit on top without sinking. None of those things would happen with most other liquids. Three properties of water are doing the heavy lifting: cohesion, adhesion, and surface tension.

Cohesion is water sticking to itself. Water molecules are attracted to each other, which is why a drop of water pulls into a rounded shape instead of spreading out flat. Adhesion is water sticking to other substances. That's why water climbs up a paper towel, soaks into a sponge, or rises through the tiny tubes inside a plant stem. Surface tension is what cohesion looks like at the surface of a body of water. The molecules at the top are pulled inward by the molecules below them, which creates a thin "skin" that's strong enough to hold up a water strider or let you fit 30 drops on top of a penny before it spills.

The core understanding students should walk away with is that these three properties are why droplets form into beads, how water gets from a tree's roots to its leaves, and how some insects can walk across a pond. Cohesion, adhesion, and surface tension are the simple ideas behind a lot of everyday things students have already seen.

💬 From Chris's Classroom

This standard is a gift because every part of it can be demonstrated in about a minute with stuff from home. I used to open with the penny drop. I'd hold up a penny, an eyedropper, and a cup of water, and ask kids how many drops they thought would fit before the water spilled over. Most guesses came in around 5 or 10. Then we'd test it. The first time a student gets to 25 or 30 drops and watches the water dome up over the edge of the coin without falling, you've got them. Cohesion stops being a vocabulary word and becomes the thing they just watched with their own eyes. From there, celery in food coloring shows adhesion pulling water up plant tubes, and a needle floating on water nails surface tension. Three demos, three properties, done.

⚠️ 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.

"Water spreads out flat because that's just what liquids do"

✓

Water actually pulls itself together into rounded drops because of cohesion. The water molecules are attracted to each other and pull inward from every direction. That's why a drop of water on a waxed car forms a tight bead instead of spreading out into a thin film. On a clean glass surface where adhesion takes over, the same drop will spread, because now water is also attracted to the glass.

"Cohesion and adhesion are the same thing"

✓

Cohesion is water sticking to itself. Adhesion is water sticking to other substances. Both happen at the same time in real-world situations (like water climbing up a paper towel), but they answer different questions. The water-to-water attraction is cohesion. The water-to-paper attraction is adhesion.

"Water striders float because they're really light"

✓

Weight matters, but the real reason a water strider stays on top of the water is surface tension. The water molecules at the very top are tugged inward by the molecules below them, creating a thin, stretchy "skin" at the surface. The strider's legs spread its weight out and dent that skin without breaking through. Add a drop of dish soap and the surface tension drops, and the strider sinks immediately.

"Water gets pumped up trees by the roots"

✓

There is no pump in a tree. Water rises through tiny tubes in the trunk because of adhesion (water sticking to the tube walls) and cohesion (water sticking to itself in a continuous chain). As water evaporates from the leaves at the top, the chain pulls more water up from the roots. That's how a 100-foot oak can move water from the ground all the way to its highest leaf without any moving parts.

📓 Teaching Resources for 8.6C

These resources are aligned to this standard.

Complete 5E Lesson

Properties of Water Complete Science Lesson

The full unit for 8.6C: 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

Station Lab

Properties of Water Station Lab

9-station hands-on lab covering cohesion, adhesion, and surface tension in water 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

Student Choice Projects

Properties of Water Student Choice Projects

Choice board with nine project options plus a "design your own" pathway. Students demonstrate their understanding of cohesion, adhesion, and surface tension through writing, building, illustrating, presenting, or digital formats.

🎓 Best for: Project-based assessment • 2-3 class periods

🌎 Phenomenon Ideas for 8.6C

Use these real-world phenomena to anchor your lesson. Show students the phenomenon first, let them wonder, then build toward Properties of Water as the explanation.

🔎

Phenomenon 1

Water Striders Walking on a Pond

A water strider is an insect that can scoot across the surface of a still pond without breaking the surface. Its feet dent the water but never sink through. The same insect dropped into a cup of water with a drop of dish soap will sink immediately. Something about the water's surface is acting almost like a thin, flexible film, and soap destroys it.

💬 Discussion Prompt

"What could be holding up the water strider on top of the pond? Why would adding soap change what's happening at the surface?"

🔎

Phenomenon 2

How Water Climbs a Tree

A tall oak tree can move water from its roots all the way up to the leaves at the top, sometimes a hundred feet or more, without a pump or a motor. The water travels up through tiny tubes inside the trunk. Both the water sticking to the tubes and the water pulling itself along play a role. No other common substance does this quite like water.

💬 Discussion Prompt

"How could water climb upward through a tree with no pump? What kind of attraction might be happening between the water and the inside of the tube, and between the water molecules themselves?"

🔎

Phenomenon 3

How Many Drops Fit on a Penny?

Hold a penny flat and use an eyedropper to add water one drop at a time. Most people guess 5 or 10 drops before the water spills. A clean penny can actually hold 25 to 40 drops because the water domes up over the edge of the coin instead of running off. Add a tiny bit of dish soap and the dome collapses with just a few drops.

💬 Discussion Prompt

"What is holding all of that water on top of the penny without spilling? Why would a single drop of soap completely change how much water you can fit?"

💡 Free Engagement Ideas for 8.6C

Penny Drops (Cohesion Demo)

Have each student predict how many drops of water will fit on the flat side of a penny before spilling. Most guess five or ten. Then they test. A clean penny can often hold 20 to 40 drops because cohesion pulls the water into a dome. Repeat with a drop of soapy water to see the dome collapse.

Materials: Pennies, eyedroppers or pipettes, cup of water, paper towels, dish soap

Celery Color Climb (Adhesion + Cohesion)

Place a stalk of celery in a cup of water mixed with food coloring. After an hour, the color has climbed up the stalk. Slice the celery to see the colored tubes inside. Students connect what they see to water moving up plants in the real world.

Materials: Celery stalks, food coloring, clear cups, water, knife for slicing

Float a Paperclip on Water

Fill a cup or small bowl with water. Lay a small piece of tissue paper on the surface, set a paperclip gently on top of the tissue, and wait. The tissue absorbs water and sinks, but the paperclip stays floating on the surface tension. Then squeeze a single drop of dish soap into the water and watch the paperclip drop straight to the bottom.

Materials: Cups or bowls, water, paperclips, tissue paper, dish soap, eyedroppers

Capillary Action Race

Cut strips of paper towel about 1 inch wide and 6 inches long. Put a few drops of food coloring at the bottom of a clear cup of water. Let students dip the bottom edge of the paper towel into the water and time how fast the colored water climbs up the strip. Try it with different paper types (paper towel, coffee filter, cardstock) and compare. The water is climbing because of adhesion to the paper plus cohesion pulling more water up behind it.

Materials: Paper towels, coffee filters, cardstock, clear cups, water, food coloring, scissors, ruler, timer

Pacing Guides | Texas Hub Module

Free Planning Tools

Year-at-a-Glance Pacing Guides

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.

4^th

Grade Science

PDF

Download Free

5^th

Grade Science

PDF

Download Free

6^th

Grade Science

PDF

Download Free

7^th

Grade Science

PDF

Download Free

8^th

Grade Science

PDF

Download Free

Free download. No email required. Updated for the 2024 TEKS with linked activities for every unit.

Trusted Across Texas | Texas Hub Module

Texas Teacher Community

Trusted Across Texas

From the Rio Grande Valley to the Panhandle, Texas science teachers are using Kesler Science to save time and engage students.

Texas Schools and Districts
Love Kesler Science

What Teachers Are Saying

Sandra G.

via email

"Complete, concise, time saving treasure chest of ready-made lessons that fit my standards. Cuts my prep time, increases student engagement, and makes it easier to have a student-led classroom."

Stacy D.

via email

"It is easy to access, updated frequently, well-supported when I have questions, and everything I need is provided. No surprises."

Debra A.

via email

"Kesler has helped me differentiate instruction for students, move toward more inquiry-based labs, and kept me from losing my mind!"

Admin Section | Texas Hub Module

For Administrators

Give Your Science Teachers Everything They Need

School and district licenses give your teachers access to every resource they need, including station labs, inquiry labs, anchoring phenomena, presentations, escape rooms, and much more. One purchase covers the grade levels you need.

✓ PO-friendly. We accept purchase orders
✓ Volume discounts for 10+ teachers
✓ Free PD session for departments of 5+
✓ Aligned to the 2024 TEKS standards

Request a Quote Schedule a Demo

See It in Action

Book a walkthrough and we'll show you how Kesler Science fits your campus.

Book Demo Call

No pressure, no hard sell

Rosemarie C.

via email

"My assistant principal stopped in my room and immediately noticed how the students were engrossed in their centers and how they moved seamlessly from center to center. Also the built-in modifications really impressed!"

Cassandra G.

via email

"It provides differentiated instruction for all types of learners, allowing them to become more engaged."

Margaret I.

via email

"I love it all!! I have become a facilitator in my class and I love the excitement it brings to my class. The kids love all that we do with the Kesler products."

Texas Science Teacher Resource Hub

🚀 Jump to Your Grade

8th Grade TEKS Standards

Properties of Water

💡 What This Standard Actually Means

⚠️ Misconceptions Your Students May Have

📓 Teaching Resources for 8.6C

🌎 Phenomenon Ideas for 8.6C

Water Striders Walking on a Pond

How Water Climbs a Tree

How Many Drops Fit on a Penny?

💡 Free Engagement Ideas for 8.6C

Penny Drops (Cohesion Demo)

Celery Color Climb (Adhesion + Cohesion)

Float a Paperclip on Water

Capillary Action Race

Year-at-a-Glance Pacing Guides

Trusted Across Texas

Texas Schools and DistrictsLove Kesler Science

What Teachers Are Saying

Give Your Science Teachers Everything They Need

See It in Action

Texas Schools and Districts
Love Kesler Science