We are pleased to join other amazing educators and educational bloggers this month in the 28 Days of STEM and STEAM project by Left Brain Craft Brain.  Opportunities to explore STEM and STEAM (Science, Technology, Engineering, the Arts, and Math) challenges in the classroom or at home do NOT have to be complicated. By offering simple challenges, kids will develop critical thinking skills to take beyond the moments of the challenge and into their everyday world. Come explore, play, and learn this Valentine’s Day with an EASY PEEPS Playdough recipe and a free-standing heart engineering challenge that even preschoolers can enjoy!

PEEPS Playdough and a Valentine\'s Day STEAM Challenge for Kids

Valentine’s Day STEAM: PEEPS Playdough and a Heart Engineering Challenge!

Objective:  To encourage the use of critical thinking skills and cross-disciplinary tools to gain new problem solving knowledge that can be applied to the everyday world.

Skills Presented in this Simple Challenge:

Science:  Kids will use skills within the scientific method (observing, communicating, comparing, organizing, and relating) while making the PEEPS playdough and will plan, construct, and document learning in the playdough free-standing heart engineering challenge.

Technology:  Students will use digital cameras to photograph their own free-standing heart designs and print the photos to share with peers. We also made a class book to share online with family and friends.

Engineering:  Kids will construct a free-standing heart from simple supplies that exhibit early attempts at engineering.

Arts: Kids will display individual (or small group) artistic expression when designing their own version of the free-standing heart challenge.

Math:  Students will use mathematical skills (estimation, same/different, lines, patterns) to construct the free-standing hearts and gain knowledge of mathematical relationships in the challenge.

Materials needed:

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  • 5 Large or 10 Small Valentine’s Day PEEPS hearts  – per small group or child (please note: the challenge can be done in ANY season simply by changing the PEEPS and the constructed item for the challenge).
  • 3 TBLS.(plus additional for kneading the dough) Corn Starch
  • 1 1/2 tsp. oil (any kind – we used melted coconut oil)
  • Food coloring (if desired)
  • Toothpicks (any kind)

STEAM Challenge for Valentine\'s Day

To make the Valentine’s Day PEEPS Heart Playdough:

  • Place 5 of the large PEEPS hearts (or 10 small ones) in a microwave safe bowl.
  • Microwave for 20-30 seconds until the PEEPS begin to puff up (watch closely). Note for parents and teachers: when marshmallows are heated in a microwave, some moisture evaporates adding gas to the bubbles which causes the marshmallows to puff up.

Valentine\'s Day PEEPS Playdough and STEAM Challenge for Kids

  • Add the cornstarch, oil, and food coloring – mix well with a spoon or fork.

Valentine\'s Day PEEPS Playdough and STEAM Challenge

  • Turn the mixture out onto a pastry mat lined with additional cornstarch. Knead the mixture well to distribute the color. It took quite a bit of additional cornstarch to get the texture needed. Add cornstarch while kneading until the mixture is no longer sticky.

Valentine\'s Day STEAM Playdough Challenge for Kids

Our kids had a blast making their PEEPS Playdough. We kneaded our dough, pressed and pushed it, until it was a nice red ball of dough.

Valentine\'s Day Playdough STEAM Challenge for Kids

Valentine’s Day Free-Standing Heart Engineering Challenge for Kids

STEAM INQUIRY: Kids are asked to engineer a basic free-standing PEEPS playdough heart using only the simple supplies below.

  • Valentine’s Day PEEPS homemade playdough (recipe above)
  • Toothpicks

The kids will ask HOW to construct their free-standing hearts.  Try to answer their questions with open-ended feedback to allow them to use critical thinking tools to solve the problem independently.  Invite the kids to draw a picture of how they want their designs to look.  It is truly amazing to watch young kids creating, thinking, and learning through play.

Documentation of Learning and Use of Technology:  As the kids construct, have them take digital photos of their constructions to print and share with their peers.  Kids will often develop “new” ideas from looking at their own photos or ones of peers.


  • Set out the homemade PEEPS playdough and toothpicks on a large table (this challenge works great for small groups or kids can do individually, too).
  • Kids are challenged to engineer a free-standing heart with ONLY their PEEPS playdough and toothpicks (the heart must stand up on its own without aid from the kids).
  • Discuss the STEPS for STE(A)M Success:

Our kids had so much fun with this challenge! They worked hard to plan their designs, test the designs to see if they worked, modify what didn’t, and make our PEEPS playdough hearts stand tall!

A Few of our own Free-Standing PEEPS Playdough Heart Constructions:

This small group had to modify their initial design to support the weight of the PEEPS playdough heart on top of the toothpick.


Look at the amazing design of this Kindergarten small group!

We hope your kids enjoy the simple STEAM challenge this Valentine’s Day, too. The free-standing heart STEAM challenge can be modified for any season by changing the PEEPS marshmallows and the item created for the challenge (Ghosts, Christmas Trees, Easter Eggs, Flags, etc.).  Your kids might also enjoy the following STEM and STEAM activities:

Mondrian Playdough Color Block Challenge for Kids

Engineering Tessellations in Early Childhood

Spring Free-Standing Flower STEM

STEM: Evergreen Tree Building Challenge

The Valentine’s Day PEEPS Playdough and Free-Standing Heart Engineering Challenge is part of a series of 28 Days of STEAM and STEM activities from Left Brain Craft Brain.  29 other blogs will share some awesome STEM and STEAM activities all throughout the month. Join us on Facebook, Instagram, or Twitter to share in the fun all month long.

Full Thematic Unit for Valentine\'s Day in Preschool or Kindergarten

For an entire thematic unit of playful learning this Valentine’s Day, please see the Valentine Love and Friendship Theme here on the blog!


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