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STEAM Activity: Rainbow Heart Valentine’s Science Craft

These rainbow heart Valentine’s science crafts can be used as decorations and are a quick “tie dye” craft. They also make a good science experiment, to see what happens when alcohol is mixed with Sharpie markers. This is great for younger kids to observe and discuss colors (but an adult must pour and handle the alcohol). 

You may also like: Valentine’s Day Crystal Growing Heart Science

Supplies

Sharpie markers

Rubbing alcohol (must be 99% rubbing alcohol or isopropyl to work)

Plastic, opaque milk jug or vinegar jug

Small dish

Medicine dropper

Heart shaped stencil/pencil

Scissors

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Instructions

Wash out a milk or vinegar container and allow to dry.

Use heart stencil (we used a cookie cutter) to trace and cut out a heart shape. 

Rainbow Heart Valentines Science Craft - Looking for educational toys, science kits, monthly crafts for kids, monthly subscriptions for kids, a monthly craft box or kids craft subscription? Green Kid Crafts, kids craft subscription and maker of the best subscription boxes, including award-winning arts and craft subscription boxes and best monthly subscription boxes has what you're looking for!

Color the hearts with a variety of Sharpie markers, the brighter the better! Be sure to protect your work surface so you don’t damage it with permanent ink or alcohol. 

Rainbow Heart Valentines Science Craft - Looking for educational toys, science kits, monthly crafts for kids, monthly subscriptions for kids, a monthly craft box or kids craft subscription? Green Kid Crafts, kids craft subscription and maker of the best subscription boxes, including award-winning arts and craft subscription boxes and best monthly subscription boxes has what you're looking for!    Rainbow Heart Valentines Science Craft - Looking for educational toys, science kits, monthly crafts for kids, monthly subscriptions for kids, a monthly craft box or kids craft subscription? Green Kid Crafts, kids craft subscription and maker of the best subscription boxes, including award-winning arts and craft subscription boxes and best monthly subscription boxes has what you're looking for!

Using a medicine dropper, place a few drops of alcohol on the colored hearts (be sure to keep away from young kids). Don’t use too much, as that will cause the colors to totally run off the plastic. 

Rainbow Heart Valentines Science Craft - Looking for educational toys, science kits, monthly crafts for kids, monthly subscriptions for kids, a monthly craft box or kids craft subscription? Green Kid Crafts, kids craft subscription and maker of the best subscription boxes, including award-winning arts and craft subscription boxes and best monthly subscription boxes has what you're looking for!

Watch as the colors start to blend together, creating a “tie dye” look. 

Rainbow Heart Valentines Science Craft - Looking for educational toys, science kits, monthly crafts for kids, monthly subscriptions for kids, a monthly craft box or kids craft subscription? Green Kid Crafts, kids craft subscription and maker of the best subscription boxes, including award-winning arts and craft subscription boxes and best monthly subscription boxes has what you're looking for!   Rainbow Heart Valentines Science Craft - Looking for educational toys, science kits, monthly crafts for kids, monthly subscriptions for kids, a monthly craft box or kids craft subscription? Green Kid Crafts, kids craft subscription and maker of the best subscription boxes, including award-winning arts and craft subscription boxes and best monthly subscription boxes has what you're looking for!

This was an easy and quick craft to do for Valentine’s Day and with supplies we had around the house. 

We enjoyed using these rainbow hearts as festive valentines decorations throughout our home – and we hope you do too! 


For more DIY and eco-friendly projects, check out our Instagram page! And, for an amazing science kit for your child, try our rainbow science box

To learn more about Green Kid Crafts, view our FAQs.

Photos & content by: Heather Kucenski

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