While I was scrolling through Pinterest looking for inspiration, I found this activity over at Coffee Cups and Crayons.
When I saw it, all I could think of was Bruce Banner getting angry and exploding into the HULK! So it seems perfect for us to give it a try during superhero month.
*Disclaimer – This is an OUTDOOR activity. You do not want to do this in your house as it will get messy fast!
This activity will get our science skills trembling.

Lil’ Explorers Focus Skills


  • Pose “what” and “why” questions about their surroundings
  • Make predictions and perform experiments
  • Understand 3 of the 5 senses to make observations

Required Materials

*Affiliate Link

*Ziplock Bag

*Baking Soda



*Food Coloring

Step #1
In a Ziplock bag pour:

  • 1/2 cup vinegar
  • green food coloring
Step #2
Seal the bag pressing out the air and leaving a small opening.
Step #3
Pour a heaping scoop of baking soda in the small opening and seal the bag.
Step #4
Place the bag on the ground, step back and observe.

Teacher Tip

Keep this experiment fun and exciting while still incorporating science skills. Talk with your Lil’ about what you’re doing, ask them to make predictions and share their observations by saying, “What do you think will happen?” or, “What do you see?” Even if your Lil’ isn’t ready to verbalize these things, talking about it allows their brain to think about it. Our Lil’s often comprehend far more than they can verbalize.

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