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  1. A great science project! How was the clean up? I am a teacher and trying to think of the best way to clean up after the fun. Any staining to the container used?

    1. Angela Thayer says:

      I did not have any staining to the container. I would make sure to use liquid water colors instead of gel food coloring. The clean up was pretty easy! I dumped out the contents and rinsed it out in the sink.

  2. Maria L Huistra says:

    How much vinegar do I use and how many hearts with this make? The recipe says “a bottle”

    Thank You!

    1. Angela Thayer says:

      I recommend using 1-2 cups of vinegar. Feel free to use more!

  3. We did the Fizzy hearts activity today and we all had a blast!! Thanks for sharing so many wonderful activities and sharing your unique abilities!!

  4. Alma Alfon says:

    My child and I did this today. I love it! My son was super focused while doing it. Thanks for this.

  5. Just did this with my boys (3.5 yrs) and they loved it. They played for a whole hour (amazing!) and were pretending it was ‘whizz away ointment’ from the Magic Faraway Tree stories. Thank-you!

  6. My kids love playing with baking soda and vinegar what a great twist on a fun activity for kids.
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