Understanding Water Pollution for Kids: A Science Experiment

Water Pollution for Kids-A Science Experiment-Mud Hut Mama
We feel incredibly lucky to have a lifestyle that is centered around nature conservation, but you don’t have to work in conservation to make a difference. Conservation Corner is a series where I highlight the many ways people around the world are making an effort to tread a little lighter on our planet.

Today Leanna from All Done Monkey shares a science experiment that helps children understand water pollution. I love Leanna’s dedication to raising world citizens and I am so happy to be a part of the Multicultural Kid Blogs community she started. It’s a lovely place to meet parents who, while not always like minded, I’ve found to be open minded, accepting and inclusive. I’ve learned so much from this group and am forever thankful to Leanna for including me in it.

I plan to highlight one story a month and I hope to make this a space where people who walk with light footsteps meet. Feel free to contact me if you are interested in contributing to this series or stop by the Conservation Corner page for a list of upcoming posts.

Understanding Water Pollution for Kids:

Waterways Preschooler Science Experiment: Alldonemonkey Post for Mud Hut Mama

When my friend Jody solicited posts for her Conservation Corner series, I jumped at the opportunity to participate. I feel strongly about the need to protect our environment and hope to pass on a love of the planet to my sons.

I’m not a scientist and have no real expertise in the how of conservation, but what I can teach my sons is the why. Having a global worldview is a passion of mine and was the driving force behind the creation of Multicultural Kid Blogs. What has always fascinated me about conservation is what it teaches us about the interconnectedness of our small planet.

I was a child when acid rain became a threat, and I remember clearly the point that the experts kept repeating: The environment knows no national boundaries. The pollution in one country creates the acid rain in a neighboring country. What we do to our environment matters, not just to us but to everyone else on the planet.

I wanted a way to drive this point home to my preschooler, so I created this simple science experiment using materials we already had around the house. He had a blast and (hopefully) will remember something of the message behind the activity.

Our Interconnected Waterways: Science Experiment for Kids

You will need:

Egg carton (cardboard is best)

Flax seed meal or other powdery material

Food coloring

Tray or cookie sheet


Lots of water!

First off, I recommend setting your egg carton on a napkin, laid inside a tray, for reasons that will become clear later. You’ll notice that I did not start this way, but soon learned my lesson!

To start we poured water into the egg carton. We had to fill it enough that the water poured from one cup to another. I talked to my son about how the waterways were all connected to each other – creeks run into rivers, which run into lakes and oceans.

Waterways Preschooler Science Experiment: Alldonemonkey Post for Mud Hut Mama

Next we talked about how if we throw trash into a creek, it doesn’t just get that creek dirty. The water carries the trash to other places, like lakes and rivers. To demonstrate this principle, we took the flax seed meal and poured it into one of the egg cups. You actually have to dump quite a bit before you see an effect, but my son didn’t mind helping with this 🙂

Waterways Preschooler Science Experiment: Alldonemonkey Post for Mud Hut Mama

Then we added drops of food coloring to another cup and watched as the color slowly spread throughout the egg carton.

Waterways Preschooler Science Experiment: Alldonemonkey Post for Mud Hut Mama

And then the experiment jumped out of the neat boundaries I had set up, which, of course, really just drove home the lesson. It turns out that if you let water sit in an egg carton for a long time, it will leak! And not just water, of course, but the food coloring that was just added to it.

Luckily I was able to roll this potential mishap into the science experiment, talking to my son about how even when the connections aren’t obvious, they are still there. Water in a lake doesn’t just stay in the lake, of course, and neither do the chemicals and dyes we dump into it. All that junk seeps into the ground and spreads, just like the dye from our egg carton, which quickly stained the napkin I had hurriedly put under it.

Waterways Preschooler Science Experiment: Alldonemonkey Post for Mud Hut Mama

My little mess-maker really enjoyed this experiment, and it was a great visual to talk about how interconnected our environment is. My son’s response? That we need to get a trash boat so we can go clean up all that trash! Alright, kid, I’ll put it on my list! Right along with the submarine he wants to get to scout out underwater volcanoes 😉

How do you teach your kids about the environment?

All Done Monkey:

LeannaLeanna is a stay at home mother to a sweet, funny, rambunctious three year old boy and his adorable, smiley baby brother. She and her husband, who is from Costa Rica, are raising their boys to be bilingual and bicultural but more importantly to be “world citizens.” You can find her online at her blog All Done Monkey, as well as on Facebook, Twitter, Pinterest, and Google +. Leanna is the co-founder of Bahá’í Mom Blogs and founder of Multicultural Kid Blogs.



Thank you Leanna! I can’t wait to try this experiment with my girls!

About Jody Tilbury

7 Responses to “Understanding Water Pollution for Kids: A Science Experiment”

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  1. Thank you so much for featuring our experiment! I love this series and your commitment to teaching kids about conservation!

    • Jody Tilbury says:

      Thank you Leanna! I love your experiment and especially how your turned the leaky mishap into a learning experience!

  2. What a great experiment! Great post, Leanna, and I love this series on your blog, Jody!

  3. Valerie says:

    I love how hands-on this experiment is. Definitely something I’d try with my son during our Earth Day week.

  4. Freaking love this! Am now rather ashamed that with an Enviro background, I have not thought about incorporating this into our schooling…ok my redeeming moment is the 12 days on the eco farm but still!

    Ladies, thank you for being such a important inspiration!
    MM xx


  1. […] from All Done Monkey recently shared a great kids’ science experiment to learn about interconnected waterways and water pollution in the last Conservation Corner post that could also be tied into learning about the water […]