What is a fun Christmas science experiment for kids? We love anything with baking soda and vinegar! This cookie cutter Christmas science activity is always a hit!

Baking soda and vinegar activities never get old! This activity is especially cool because you can make it a festive holiday theme using some of the Christmas cookie cutters you have lying around!

RELATED: Looking for more awesome science experiments you can do anytime? Check out our collection!

It doesn’t get easier than this! This is a super quick to set up activity that WOWS every time!

Here’s what you need for this science experiment:

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Christmas Science Experiment Instructions:

  1. Pour vinegar into two cups. Add green food coloring to one cup and red food coloring to the other cup.
  2. Place Christmas cookie cutters on a baking pan or craft tray and fill them with baking soda. Try and keep the baking soda inside the cookie cutters.

That’s it! So easy! Now you’re ready to experiment.

RELATED: Need more easy to set up Christmas ideas? We have 60+ awesome Christmas ideas you can try here.

Scientists make predictions (aka hypotheses: an educated guess)… so start with that!

Encourage your kids to make a guess about what they think is going to happen when you put the vinegar onto the cookie cutters.

Kids can squeeze vinegar onto the baking soda, they can squeeze vinegar back into the cups, and they can mix the colors as they play with the tools.

As they explore the materials, talk about what’s happening and what they see. Ask questions.

Undoubtedly kids will squeeze some baking soda and vinegar together into the cups and there will be some fun explosions. Let kids experiment!

*Our rule for activities like this is that everything needs to stay on the tray.

Recommended age for this Christmas Science Experiment?

Each child is different! We start doing fizzy science activities with toddlers around age 2 but using a jumbo dropper or pipette is easy for some and harder for others depending on their fine motor skills development. Some kids just enjoy pouring the vinegar instead of using a dropper.

If you’re not sure if your child is ready for something, just try it out!

If they’re not ready for it, just try again in a few weeks or months. Kids develop so quickly during the toddler and preschooler stages that one month they might not be ready for something and the next month they are!

It’s like a volcano, without the mess of needing to build a paper mache or playdough volcano.

I promise your kids will LOVE it. You probably will do.

We love to repeat this again… and again… and again!

Want to repeat it? Just add more baking soda inside the cookie cutters.

Want to make the fizz even cooler? Try adding some Dawn dish soap and see what happens.

Do you have any other favorite Christmas science activities that are repeats each year for your kids? Tell me about them in the comments!