I'm a little late with Valentine's Day this year. My 10-year-old is making a card next to me while I plan some easy activities for tomorrow.
These Valentine's STEM Challenges They are designed to be very easy and use only basic materials.
If you're looking for something a little more elaborate, check out my full collection of Science experiments for Valentine's Day. He magic potions that change color they're my favorites!
Send a Valentine's Day message
The idea behind this Valentine's Day STEM Challenge is to create a mechanism to send a Valentine's message. It can be a paper airplane, a paper spinner, a zip line, or any other creation that flies.
I've created a paper spinner template and a straw rocket template to make this activity as easy as possible!
Valentine's Day Paper Swirl Template
Print the template, cut out the spinners, write a message, and then watch the spinner fly through the air!
![Valentine's Day Paper Spinners for a Science Challenge](https://www.science-sparks.com/wp-content/uploads/2024/02/Valentine-spinner-724x1024.jpg)
Straw rockets for Valentine's Day
Write a message on the plane and send a unique Valentine's Day message to a friend!
![Valentine's Day Straw Rocket STEM Challenge](https://www.science-sparks.com/wp-content/uploads/2024/02/Straw-Rockets-instructions-and-template-Valentine-Style-1024x724.jpg)
Write a secret message
Write a secret message with lemon or lime juice.
Lemon or lime juice is excellent Homemade invisible ink To write secret messages. Just put the paper in the oven to reveal the message.
![A lemon juice heart on a piece of paper for an invisible ink activity.](https://www.science-sparks.com/wp-content/uploads/2015/01/DSC_0032.jpg)
Inflate a balloon heart
This simple science activity uses alkaline mineral water or baking soda and vinegar to Inflate a heart-shaped balloon.
![Inflate a balloon with Alka Seltzer](https://www.science-sparks.com/wp-content/uploads/2016/01/DSC_2397.jpg)
This scratch card coding activity for Valentine's Day Code Wizards is a lot of fun, also.
![STEM Challenges for Valentine's Day image](https://www.science-sparks.com/wp-content/uploads/2021/02/Valentines-Day-STEM-Challenges-Pin-683x1024.jpg)
Last updated on February 6, 2024 by Emma Vanstone
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