Color Changing UV Slime Recipe for Kids
This color changing UV slime recipe starts out looking like regular slime until you step outside. Them BAM . . . science takes over, and the color changes right before your eyes. It's like having your own little chameleon right there in your hand.
It's the perfect slime for summer (when I want the kids outside anyway), spring science units, or when you're just in a hands on science kinda mood.
Searching for more fun summer activities? Check out all these Bug Activities for Kids.
Why I am loving the UV slime for sensory play
Sure, regular slime is fun. But UV slime? That’s a whole new experience.
Here’s why this color-changing goo is amazing:
- 🌈 Built-in wow factor: Watch it change colors in the sunlight. I love putting a toy on top of the slime to see the color different more drastically.
- 🔬 Sneaky science lesson: Great for introducing UV light and how sunlight affects different materials.
- 🧠 Multi-sensory experience: Stretchy, squishy, and visually mind-blowing.
- 👶 Kid-approved (obviously): Great for preschoolers and big kids alike!
This is the kind of activity that makes kids say, “Can we do that AGAIN tomorrow?” And that makes me feel like I'm winning at parenting.
Step-by-Step Color Changing Slime Recipe
This slime recipe uses just a few ingredients, and the star of the show, Elmer’s color-changing glue is available at most craft stores or online.
Color Changing UV Slime
Mix up a batch of science fun in just minutes! This easy color changing slime recipe uses simple ingredients and hidden scientific magic for unforgettable sensory play.
Materials
- 5 oz Elmer's color-changing glue
- ½ Tsp baking soda
- 1 ½ Tbsp Contact Solution (contact solution should contain Boric Acid)
Tools
- Bowl
- Spoon
- Measuring cup and spoons
Instructions
- Gather all the supplies needed.
- Add baking soda.
- Add the color changing glue to the baking soda and stir.
- Knead contact solution into the slime until it's no longer sticky and pulls away from the sides of the bowl.
- You may need to knead to incorporate all the ingredients well.
- Head outside and watch as the slime changes colors. Add a toy to see the colors vibrantly.
Notes
Slime can be stored in a resealable ziplock baggie or an airtight plastic container.
Tips for the Best UV Slime Experience
- 🧴 Use the right glue: Make sure you're using the actual Elmer’s UV color-changing glue it’s the secret ingredient that makes the magic happen. I don't say that to be picky, but because there isn't a great alternative out there yet.
- ☀️ Test it indoors and outdoors: Let kids guess what color it might change to before heading outside!
- 🧼 Slime too sticky? Add a tiny bit more contact solution and knead it well. It'll come together with a little patience.
- 🧪 Bonus tip: Use this moment to talk about how UV light is invisible to the naked eye but still affects things around us, like this slime!
Learning Ideas + Play Extensions
Want to stretch this activity beyond the slime itself? (Pun 100% intended. 😆)
- Prediction Game: Before heading outside, ask kids what color they think it will turn.
- UV Science Chat: What else changes color or fades in sunlight? (Hair, clothes, toys, etc.)
- Outdoor Slime Hunt: Let the kids take their slime around the yard and see what shadows, shade, or direct sun do to the color.
- Art + Science Combo: Have them draw what they saw before and after exposure to sunlight.
Storing Your Color Changing Slime
Once you’re done playing (and wow-ing your neighbors), store your UV slime in a resealable baggie or airtight container. It should last a few days of fun if kept sealed!
Perfect For:
✔️ Summer sensory bins
✔️ Preschool science units
✔️ Easy at-home experiments
✔️ Weather and sunlight lessons
✔️ Just-for-fun playdates with a twist
This color-changing UV slime is the kind of activity that feels like a science experiment, craft, and sensory bin all rolled into one stretchy, gooey adventure. ✨
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