Science!! It’s all in the name of science I said as I laid a huge stack of peeps packages on the conveyor belt next to my pile of produce! The peeps were just calling me to make slime and try other awesome peeps science experiments and activities. OK, they didn’t quite speak to me like that, but I did feel the need to say there are at least 10 peeps science experiments, activities, and projects you can try with these fluffy things!

Peeps Science Experiments For kidsPin

Explore Easter Science With Peeps Candy

The challenge was on to make true to my word and make sure you have at least 10 peep experiments and activities you can try out before and after Easter because you may end up with a whole menagerie of peeps by then. Peeps candy may also go on sale after the fact, so you could wait till then as well!

We have tried a few fun and simple peeps science activities around here, and I have collected a few fun and easy ways to experiment with them from around the web. Candy experiments are always a hit with kids, and they are also a great way to use up all the candy you seem to pile up with these holidays.

Get ready to add these simple Peeps activities to your Easter science lesson plans this season. If you want to explore science with a fun Easter theme, let’s dig in. While you’re at it, make sure to check out these other fun  Easter Science Activities.

All our science activities and experiments are designed with you, the parent or teacher, in mind! Easy to set up, quick to do, most activities will take only 15 to 30 minutes to complete and are heaps of fun! Plus, our supplies lists usually contain only free or cheap materials you can source from home!

Provide kids with the opportunity for fun hands-on learning and sensory experience! Build their language skills, and social and emotional skills, as they work with you or others to understand their world through science.

Fun Things To Do With Peeps

1. Peep Slime

Find out how to make peep slime with a few simple ingredients. Great fun with a taste safe stretchy slime! Here’s our peeps slime recipe.

2. Peeps Sink or Float Experiment

Do Peeps float in water? So you may have guessed the answer already, but what about asking the question of how can you make a peep sink?  This is an easy STEM activity that gives kids the opportunity to problem solve and test out possible solutions.

What my son tried, to get his peeps candy to sink:

  1. First, my son thought squishing the air out of the peep might work, so he tried a rolling pin and then his hands. Not so great.
  2. Then he took an already wet peep and smashed it up. Score!

Why do wet peeps candy sink and dry ones don’t? Or why does a peep even float?

Well, it’s filled with a lot of air bubbles that make up the light and airy texture. The peeps density is less than the water’s density.

We tried really quite hard to squish the air out of that peep but it sure was a challenge and we really couldn’t get it to sink either which in theory should work. It’s similar to experimenting with an aluminum foil ball.

Our conclusion was that we were simply able to squeeze that much more air out of it when we squished it into a ball. maybe you will have more luck with a dry peep then we had.

Sink or Float Peeps Science Experiments and ActivitiesPin

3. Dissolving Peeps Experiment

What happens to peeps candy when you put them in different liquids?

Test how easily peeps dissolve in different liquids or their solubility is a classic science experiment and so much fun to do with candy! We did a very basic set up just for exploring and observing solubility which is perfect for the younger kids. All we had available on short notice was water, vinegar, and ice tea.

We did solve a problem though, which was how can you dissolve a floating peep when you can’t immerse it in the liquid? You can see our solution in the pictures below. I thought it was rather creative, and science is all about asking questions, testing, and finding results! The winner here was vinegar, then tea, then water.

I am going to warn you right now, the eyes are all that’s left in the bottom right photo. Just a little creepy!

SUPPLIES: Cups, Peeps, and a variety of liquids from the kitchen!

SET UP/PROCESS: Start by pouring the same amount of liquid into each cup. To simplify the experiment, choose just hot and cold water! Even simpler, just one cup of water is perfect for the youngest scientists to note changes in the peeps. What happens to the peeps in the liquids after a certain amount of time?

SIMPLE SCIENCE: Peeps are water soluble meaning they can be dissolved by water because they are made of sugar. You will notice the color from the peeps dissolve the fastest. If you choose to use vinegar (good idea), you will notice the acidity from the vinegar breaks down the peeps the fastest.

Peeps Dissolving Solubility Science Experiments and Activities Pin

4. Build A Catapult For Peep Throwing

Why not construct a catapult? It’s a great STEM activity to explore Newton’s Laws of Motion. All you need are rubber bands, jumbo Popsicle sticks and the tutorial here.

Use your catapult to investigate whether different shape peeps candy travel faster than others? Which travels farther, a peep or a plastic egg? Why do you think? You can also add a tape measure and fit in some math skills at the same time!

5. Heat Peeps Candy

Make a fluffy rainbow from peeps candy and observe the heat changes by adding on 20 seconds each time. The two links below allow you to take this peeps science activity and turn it into a cool peeps candy STEM activity as well. We did manage to fill the dish with a rainbow of peeps before it got ugly {burnt peeps-so sad}.

SUPPLIES: Peeps and a microwave safe dish. You can make a rainbow like we did or use just a single one.

SET/UP PROCESS: Place the peeps in your microwave safe container. If you want, measure their height and width before microwaving them. We made a rainbow with clouds, so it was a bit harder to measure.

Heat your peeps for about 30 secs (this is the variable in the experiment). You may need more or less heat depending on your microwave oven. Observe the changes taking place! What’s happening to the peeps? Are they expanding or growing in size?

SIMPLE SCIENCE: Peeps are marshmallows, and marshmallows are made of tiny air bubbles surrounded by gelatin and sugar syrup (sugar). When the peeps are microwaved, the water molecules in that syrup begin to vibrate and heat up. This process creates steam, and it fills all of the air pockets in the peeps. As the air pockets fill up the peeps expand!

How does heat effect peeps science experiments and activities for Easter sciencePin

6. Freeze Peeps

Can you freeze solid a peep? Nope, peeps candy won’t freeze solid because they have a low moisture content! Our peeps were cold and firmer, but you could still squeeze them!

This is still a great quick and easy experiment to get the kids thinking. Pose the question to them, and let them make their own predictions and set up their own tests {place in freezer}. Does it make a difference how long it is in the freezer for? What if they place a peep in a bag of ice in the freezer? How is freezing peeps similar or different to putting water in the freezer?

7. Peeps Engineering Challenge

We used a little jelly bean engineering to come up with creative structures to house our peeps chicks. Makes a fun STEM challenge for kids!

Variation:  Grab the toothpick and peeps and see how high you can build a tower!

8. Peeps Candy and The 5 Senses

Can you use all 5 senses to explore peeps candy? Taste, touch, sight, sound, and smell! I bet you can if you pay close enough attention to your senses! What do my peeps look, smell, feel, sound and taste like?

9. Peeps Playdough

Who would have thought you could make homemade playdough from a bunch of peeps? Kids love hands-on play and best of all it is great fun for toddlers to preschoolers and beyond.

Peeps Playdough

10. Peeps STEM Challenges

Fun printable building challenges that kids can do with a bag of Peeps.

Printable Easter Project Pack

  • 20+ Easter science activities and STEM projects kids that are easy to set up and fit into the time you have available even if it’s limited!
  • Printable Easter theme STEM activities that are simple but engaging for home or classroom. Perfect for K-2 and beyond but easily adaptable to many skill levels.
  • Dive into simple background science explanations to share with kids while they explore hands-on and playful experiments, projects, and activities such as Easter oobleck, erupting eggs, regrowing lettuce, and more!
  • Engaging Easter STEM activities pack with theme activities, journal pages, and design process steps! Learn about the design process and think like an engineer while you design and build a better Easter basket and more!
  • Easy to gather supplies makes these STEM activities ideal when you have limited resources available. Specialty activities include a catapult and balloon rocket challenge pack with log sheets!
  • Additional STEM activities: Include the great Easter egg tower, spaghetti, marshmallow challenge Easter theme, brick building ideas, puzzles, and screen-free coding activities.


  • Easter STEM Pack
  • PEEPS Theme STEM Pack
  • Easter Slime Science Pack


  1. A peep is simply a marshmallow that is made into a holiday shape and coated in sugar.

  2. Pingback: Easter Science Activities and Easter STEM Ideas for Kids
  3. Pingback: Building With Jelly Beans Easter STEM And Engineering
  4. Pingback: STEM Easter Ideas - PIECE OF PIE
  5. Pingback: Peeps Slime Candy Science for Easter Science and Sensory play

Comments are closed.