Fizzy Dinosaur Eggs

This post may contain affiliate links. Please read our disclosure policy. Adult supervision is required for all activities found on

Get ready to set off on a journey back to the prehistoric era. Our Fizzy Dinosaur Eggs activity combines the excitement of uncovering baby dinosaurs with the fascinating world of simple chemical reactions. This hands-on experiment not only captivates your little little paleontologist but also introduces them to the basic principles of science in a fun and engaging way.

The process of creating Fizzy Dinosaur Eggs is straightforward, requiring everyday household items and a dash of creativity. By embedding small dinosaur toys inside colorful, homemade baking soda eggs, children can play the role of paleontologists, discovering dinosaurs as the eggs fizz and dissolve away in vinegar. This activity is perfect for kids who love dinosaurs, enjoy messy play, and are curious about the world around them. So, gather your materials, and let’s create some fizzy fun that will have your little ones roaring with excitement!

Science Behind Fizzy Dinosaur Eggs

The magic behind the fizz lies in the reaction between baking soda (a base) and vinegar (an acid). When these two substances mix, they create a gas called carbon dioxide, which causes the bubbling and fizzing sensation. This reaction is not only exciting to watch but also provides a fantastic visual explanation of how acids and bases interact, making it a perfect learning opportunity wrapped in layers of fun.

More Easy Fizzy Baking Soda and Vinegar Experiments

Do you want to try more experiments with baking soda. Check out these other fun and easy fizzy activities perfect for kids:

Fizzy Dinosaur Eggs Material List:

How to Make Fizzy Dinosaur Eggs

1. Mix the Ingredients:

Find a large mixing bowl to start your fizzy dinosaur egg adventure. Carefully measure 1 cup of baking soda and pour it into the bowl. Next, add 1/4 cup of cornstarch, which will help bind your mixture together, making it the perfect consistency for your dinosaur eggs. Finally, pour in 1/2 cup of water and start stirring. You’ll notice the mixture becoming a goopy paste. This is exactly what you want: a moldable texture that’s not too wet but not too dry. If it feels a bit stiff, don’t hesitate to add a tiny bit more water until you reach the desired consistency.

2. Color the Mixture:

This is where the magic starts! Divide your base mixture evenly into four separate bowls. This is your chance to bring a rainbow of dinosaurs to life. Choose your favorite food coloring—bright and bold or soft pastel shades work equally well. Add a few drops of a different color to each bowl. Using a spoon or a stick, stir each bowl until the color is fully mixed into the paste, ensuring there are no white streaks left.

3. Prepare the Eggs:

Grab your reusable water balloons and a small spoon or your fingers for this part. First, open the reusable balloon. Choose your first dinosaur toy—consider its size to make sure it will fit inside the balloon. Place the dinosaur on one side of the balloon. Then, spoon the colored baking soda mixture into the balloon, surrounding your dinosaur. Make sure to fill both sides of the balloon evenly for a well-rounded egg shape. Once filled, carefully bring both sides of the balloon together, securing your dinosaur inside its fizzy egg. Repeat this process for as many dinosaurs and colors as you like.

4. Freeze the Eggs:

Carefully place your filled balloons in a bowl or tray. Make some room in your freezer, setting the bowl inside. Freezing the eggs will harden the mixture, making the next part of the adventure even more exciting. They’ll need to stay in the freezer for at least 1 hour, but they can stay longer if you can.

5. Set Up the Fizzy Dinosaur Sensory Bin:

While the eggs are chilling, prepare your sensory bin for the big reveal. If you’d like to keep things tidy, place small bowls within the bin to contain the vinegar. This setup allows for focused fizzing action and makes cleanup a breeze. Once the eggs are frozen, remove them from the reusable water balloons carefully and distribute them into the bin or directly into the bowls, ready for the next step.

6. The Fizzy Reveal:

Fill a container with vinegar—white vinegar works best due to its clear color and strong reaction. Set out eye droppers or pipettes for your kids to use. This will give them control over the vinegar and add to the fun. Invite your children to squirt vinegar onto the eggs. They’ll be mesmerized as the eggs start to fizz and foam, slowly revealing the dinosaurs trapped inside. Encourage them to guess which dinosaur might appear from each egg based on the color or the shape of the fizzing egg.

Tips for Success:

  • If you don’t have reusable water balloons, small sandwich bags tied tightly can work as an alternative.
  • For younger children, assist with the balloon filling to ensure the dinosaurs are snugly packed inside the fizzy mixture.
  • Experiment with using different amounts of vinegar for varied fizzing effects. Dropping vinegar slowly might offer a prolonged reveal, while pouring a bit more can create an instant, bubbly explosion.

Skills Learned:

This activity isn’t just fun; it’s educational. Kids practice their fine motor skills by using eye droppers and learn basic chemical reactions between baking soda and vinegar. They also get a lesson in patience as they wait for their dinosaurs to emerge, along with a sense of wonder and exploration as they discover which dinosaur comes from each egg.

How My Kids Aged 5, 5, and 8 Played with This Craft:

My kids were eager paleontologists for the day, each taking turns to dissolve the eggs and uncover the dinosaurs. The twins, both aged 5, were fascinated by the changing colors and bubbling reaction, while my 8-year-old was more focused on identifying each dinosaur as it was revealed. They experimented with adding different amounts of vinegar, observing how the reaction speed varied. It was an afternoon filled with laughter, learning, and lots of fizzing!


Skills Learned:

  • Scientific Understanding: Kids learn about chemical reactions, specifically the reaction between an acid and a base.
  • Fine Motor Skills: Using eye droppers to dispense vinegar helps in developing fine motor control and coordination.
  • Sensory Exploration: The experiment engages multiple senses, including sight, touch, and smell, as kids observe the fizz, feel the textures, and smell the vinegar.
  • Patience and Anticipation: Waiting for the dinosaur toys to be revealed teaches patience and builds anticipation, enhancing the overall experience.

Creating Fizzy Dinosaur Eggs is more than just a craft; it’s a doorway to discovery, offering a unique blend of science, fun, and prehistoric exploration. So why wait? Unleash the dinosaurs and let the fizzy fun begin!

Play2Learn Toddler & Preschool Programs for Curious Toddlers

Play2Learn Toddler & Preschool Programs for Curious Toddlers image

There is no limit to your toddler’s energy and curiosity. That energy and curiosity although a joy can be challenging at times. Their interest in just about everything around them is what makes them great learners. One and two year olds can soak up so much just from their senses!

But as a teacher or parent that thirst for learning can be exhausting. That is why I created this toddler and preschooler program. To help you get the most out of this time with your curious toddler without having to come up with creative ways to play and interact with them.

Play2Learn for Toddlers includes 20 Units for toddlers. Each 2-week toddler unit has 20 super easy to set up and engaging activities for toddlers 18 months to 3 years.

Play2Learn Preschool which includes 20 Units for preschoolers. Each 2-week preschoolers unit has 20 unique and easy to set up and engaging activities for preschoolers 3 years to 5 years. That’s over 800 learning activities for your toddler and preschooler at your fingertips! So many ideas you and your child will never be bored again! 

These toddler and preschool lesson plans and activities will definitely keep you and your toddler and preschooler busy playing and learning!

Click here for more information: Play2Learn

Book: Exciting Sensory Bins for Curious Kids

Exciting Sensory Bins for Curious Kids image

Did you know I wrote a book of sensory bins? Click here for more information Exciting Sensory Bin for Curious Kids. Or grab your copy at Amazon

Boring afternoons are made exciting with awesome animal-based bins, like Salty Shark Bay or Yarn Farm. Pretend play bins like Birthday Cake Sensory Play or Bubble Tea Party encourage creativity and imagination. And your kids will have so much fun they won’t even know they’re getting smarter with STEAM (science, technology, engineering, art and math) activities like Sink or Float Soup, Magnetic Letter Hunt or Ice Cream Scoop and Count.

Designed for toddlers 18 months and up.

Book: Super STEAM Activity Book for Kids

Super STEAM Activity Book for Kids image

Learning all about science, technology, engineering, art, and math sets kids up for scholastic success―and it can be so much fun! Watch kids enjoy building STEAM skills as they color friendly fish, help water find its way to tree roots, solve math problems with mazes, and more. 

Find out more and grab your copy here.

Designed for preschoolers 3 years old and up.

Book: Big Book of Riddles for Kids

Big Book of Riddles for Kids image

Riddle me this: What’s an exciting way to practice critical thinking while having a blast? The Big Riddle Book for Kids, of course! From hilarious puns to tough brain teasers, kids can build problem-solving skills with hundreds of riddles tha. t show them how to think outside the box.

  • 350 riddles for kids—Have hours of fun with riddles, puns and jokes, and math and logic puzzles that’ll get their wheels turning!
  • Level up their skills—Riddles get trickier as kids progress through the book, challenging them as they get better at solving puzzles!
  • Double-check their work—Kids can check their answers in the back of the book with a handy answer key.

Help children expand their minds while having fun with this puzzle book for kids!

Designed for kids ages 6 years old and up.

TV Show: Curious Crafting

I’m so excited to share my crafting TV show Curious Crafting which launched in July 2022 on TVOkids and TVOkids YouTube! Season 2 aired in August 2023! My show was also nominated in 2023 for Best Live Action Preschool Series by the Youth Media Alliance Awards of Excellence.

Curious Crafting Season 1 is also now airing in Australia on ABC! Watch it here!

Set in the ultimate crafting space, Curious Crafting is a short form pre-school age series about the joy of making crafts. I lead a rotating cast of adorable little preschoolers (including my own) making magic out of common household objects.

In each episode we transform recycled items into magical crafts like a milk carton school bus, paper bag puppet or cotton pad turtle. The crafters learn and laugh their way through each activity while demonstrating what their young imaginations can create. 

Curious Crafting shares the adventure and joy of making art with takeaway lessons for creating crafts at home.

This show designed for toddlers and preschoolers 2.5 years old and up. 

Fizzy Dinosaur Eggs



  1. Mix the Ingredients: In a bowl, combine 1 cup of baking soda, 1/4 cup of cornstarch, and 1/2 cup of water. Stir until it forms a goopy paste.
  2. Color the Mixture: Divide the mixture into four bowls. Add a few drops of different food coloring to each bowl and mix well until the color is evenly distributed.
  3. Prepare the Eggs: Place a small dinosaur toy inside a reusable water balloon. Fill both sides with the colored baking soda mixture and carefully close it. Repeat this process with additional water balloons and dinosaurs.
  4. Freeze the Eggs: Once all the balloons are filled, place them in a bowl and freeze for at least 1 hour to harden.
  5. Set Up the Fizzy Dinosaur Sensory Bin: Arrange your sensory bin with small bowls to contain the vinegar if you prefer a more controlled experiment. Place the frozen eggs in the bin or bowls as desired.
  6. The Fizzy Reveal: Pour vinegar into a bowl and use eye droppers to invite your child to squeeze vinegar onto the eggs. Watch as the eggs fizz and dissolve, revealing the hidden dinosaurs inside!

Filed Under:

Review and rate this post!

I love hearing from you! Submit your question or review here. Your email address will not be published. Required fields are marked*.


This site uses Akismet to reduce spam. Learn how your comment data is processed.