Dancing Bells STEM Experiment for Kids
- Gina
- Dec 4
- 2 min read
Updated: 57 minutes ago
In this BLOG post I will teach you how to set-up the dancing bells STEM activity.
This experiment will WOW your kids Every. Single. Time.
It's Science, its sensory play and it's a little bit of magic right before your eyes!
Children are wired to wonder and this experiment will set their sweet brains into motion. When they watch bells rise and fall, they’re learning to ask questions, make predictions, and stay engaged with the world around them.
Why STEM play?
STEM doesn’t have to be complicated. In fact, the most powerful learning often happens in the simplest setups like this one!
This activity supports:
Cause and Effect:
Children see instantly how one action (adding vinegar) creates a reaction (fizzing and movement).
Early Chemistry Concepts:
They’re witnessing a real chemical reaction, an acid (vinegar) meeting a base (baking soda) to create carbon dioxide bubbles.
Fine Motor Development:
Using droppers or small cups strengthens hand muscles and coordination.
Sensory Exploration:
The fizzing sound, the cool foam, the shiny bells, it’s a full sensory experience that keeps little learners engaged.
Curiosity and Confidence:
STEM play builds a mindset of “I wonder what happens if…” the foundation of lifelong learning.
Materials:
Tall glass jar
(1) cup water
(2) tablespoons of baking soda
White vinegar
Craft bells
Spoon
Step 1: Pour one cup of water into the glass jar. If your glass jar is taller, you can double it and add 2 cups of water (double everything else too!)
Step 2: Add in the baking soda and stir. Let it sit for a few minutes to settle.
Step 3: Add in the bells.
Step 4: Slowly add the white vinegar. It is important to go slow! You don’t want it to start bubbling over and out of the glass. The vinegar will start reacting with the baking soda and the bells will start ‘dancing!”
APFL Tips:
Always supervise closely — bells are small and can be a choking hazard.
Encourage children to keep materials away from their mouths and eyes.
Rinse hands after play, especially if they touch the experiment.
f you don’t have bells, try this experiment with corn kernels.
Once the bells stop dancing, give them a stir and add a little more white vinegar to reactivate it.
Want a FREE activity card? Download it HERE!
This Dancing Bells in a Jar experiment isn’t just a fun moment; it’s a meaningful way to support your child’s development right in the flow of everyday life. You don’t need special materials, a science background, or a perfectly planned setup. Just a jar, a few pantry staples, and a willingness to explore alongside your child.
You get to decide what is safe and manageable in your home. Always monitor young children.
Looking for more Christmas Crafts? Check these out!
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