Baking Soda Sidewalk Chalk

5 Materials
$12
13 Minutes
Easy

Hey all! As you may already know, baking soda has so many different uses. I have a cool craft for the kids to do just in time for the summertime: Baking Soda Chalk.
This project is super simple, all you will need is baking soda, corn starch, an ice cube tray, watercolor paint, water, and your freezer.
This project is super simple, all you will need is baking soda, corn starch, an ice cube tray, watercolor paint, water, and your freezer.




Then add 4 tablespoons (or ¼ cup) of cornstarch into the baking soda.
Add 8 tablespoons (or ½ cup) of water into the powdery mixture.
Next, add in your choice watercolor paint.
Mix it all together. Then pour your mixture into an ice cube tray and place in the freezer. It takes around 6 hours to harden up.
Mix it all together. Then pour your mixture into an ice cube tray and place in the freezer. It takes around 6 hours to harden up.
VOILA! Now you got nice cooling chalk for a hot summer day! Your kids will love helping out with this and playing with it. Heck, you will too!

Suggested materials:

  • Baking Soda  (CVS)
  • Cornstarch  (CVS)
  • Water  (Sink)
See all materials

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Have a question about this project?

3 of 13 questions
  • Tasha Boyd
    on Feb 2, 2019

    How much baking soda do you use

  • Tanya
    on Apr 27, 2020

    Hi, made sidewalk chalk today with cornstarch , water & food coloring. However, there is still a layer of water on top of chalks... will this eventually dry as well ??

  • Tanya
    on Apr 27, 2020

    Hi, made sidewalk chalk today with cornstarch , water & food coloring. However, there is still a layer of water on top of all the chalk. Will this eventually dry as well ?

Join the conversation

2 of 9 comments
  • Linda
    on Jul 12, 2017

    1/4 cup......
  • Tisha
    on Jun 28, 2019

    Hi Ariel

    I work with ARM & HAMMER Baking Soda and we LOVE  this idea! Do you mind if we repost your article? Tisha

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