Unicorns are having a moment. Go into any store, and you'll find something with a unicorn horn within minutes. My daughter is crazy about unicorns! If you have unicorn-loving kids in your house too, they will adore this super-fun, and science-themed unicorn sensory bin!
This sensory bin uses cornstarch and water to make oobleck, which is a non-Newtonian liquid. Non-Newtonian fluids have properties of both a liquid and a solid. When allowed to rest, the molecules relax and act like liquid. But when force is applied, the molecules seize up and the oobleck acts like a solid! It's an amazing thing to play with, particularly when unicorns and rainbows are involved.
Unicorn Sensory Bin
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This super-fun unicorn sensory bin is perfect for keeping kids occupied, especially for a playdate. Both little kids and older kids will have a blast, too! We recommend adult supervision for this activity.
You'll want to make the oobleck before giving this to your kids to play with. Be warned, oobleck is MESSY. I recommend playing with it on a surface you don't care about messing up, like a kitchen counter or bathtub. Or, spread out a disposable tablecloth or newspapers under the play tray.
Mix about 2 cups of corn starch with food coloring. We used pink, but you can add any color you want!
Add water slowly until it forms a slime-like substance.
If you can still pick it up with your hands and form a hard ball, but it starts to ooze out of your hands as soon as you relax, it is ready.
Place the unicorns in the oobleck along with the erasers. The kids will love seeing how they can get the unicorns to rest in the oobleck. One kid was even able to get the unicorn to stick in her hand upside down, which was pretty cool. My preschooler insisted on sorting the objects in the sensory bin by type. It was really fun to see how each kid played differently in the sensory bin, but all had fun!
While the kids play, ask them to observe how the oobleck looks, moves, and feels. Introduce them to terms for states of matter, such as liquids, solids, and non-Newtonian fluids.
It's fascinating and a fun way to play with science. We hope you and your family enjoy making your own unicorn sensory bin with oobleck!
Darcy lives outside of Milwaukee, Wisconsin with her husband, their 8 year old daughter, 6 year old son, two cats, and a rescue dog. She loves to share kids crafts, simple recipes, and parenting tips to help other moms. She's passionate about education (which is why she is a PTO board member and Box Tops Coordinator) and all things babies. Darcy loves purple, geek culture, and making an ordinary life feel extraordinary. She and her family enjoy exploring Wisconsin and planning local adventures. Author of Breastfeeding 101: Beauty in Breastfeeding, available on Amazon. Her writing has also been featured on Babble, CafeMom, and Mom.me.