Fizzing Baking Soda Dinosaur Eggs STEM Activity

Are you looking for a fun, outdoor STEM activity for the kids? Try making these baking soda dinosaur eggs- and hatch them out with vinegar!

These fun baking soda dinosaur eggs combine everyone’s favorites for a fun STEM activity for kids that everyone will love!


– Baking soda  – Cornstarch  – Water Optional: food coloring

You will also need: – Ziploc bag – Small dinosaurs – White vinegar (lots of it!) – Eye dropper – A tray to contain the me

Step 1

Mix baking soda and cornstarch in a plastic bag. Add color if wanted.


Add water a little at a time until the dough holds together.


Add your dinosaurs! Form the dough around small dinosaurs in an egg shape.


Place the finished eggs on a tray and freeze them for at least an hour. 

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