Free Printable 30-Day LEGO STEM Challenge Calendar for Kids

Check out this free printable 30 Day LEGO STEM Challenge calendar that will have your little LEGO lovers coming up with creative designs to solve the daily challenges!

Free 30 Day LEGO Challenge Calendar Mockup

If you’ve ever stepped on a LEGO and thought, “Well, we might as well learn something from this” (after you stopped howling from the pain, of course), you’re in the right place.

This 30-Day LEGO STEM Challenge Calendar turns everyday LEGO play into simple, hands-on learning, one fun build at a time.

We put together this 30-Day LEGO STEM Challenge Calendar after realizing that some of our best learning moments were happening right on the floor… usually surrounded by half-built LEGO creations and a few very strong opinions about whose design was better. With all the LEGO fun we’ve been having, we wanted to share the STEM challenges we’ve already tried – and a few new ones we’re excited to tackle next.

LEGO really is the perfect tool for STEM learning for kids. Every build turns into a problem-solving adventure, whether kids are figuring out how to make a LEGO boat hold the most pennies or designing a car that actually moves across the room. It feels like play (because it is), but kids are quietly using engineering, critical thinking, and creativity the whole time.

One of my favorite things about LEGO STEM activities is that there’s no single “right” answer. There are so many ways to solve each challenge, and my kids have proven over and over again that mommy’s way is definitely not always the best way. Watching them test ideas, defend their designs, and proudly say, “I fixed it!” is half the fun.

And the best part? These challenges never get old. You can repeat them again and again, tweaking and improving each time. Already built a balloon-powered LEGO car? Try a new design and see if you can make it go faster.

This LEGO STEM challenge calendar makes it easy to turn everyday LEGO play into hands-on learning—no prep, no pressure, just build, test, and try again.

How to Use the LEGO STEM Challenge Calendar

Using the 30-Day LEGO STEM Challenge Calendar is easy and flexible enough to fit your family, classroom, or homeschool routine.

Start by printing the calendar and hanging it somewhere visible, like the fridge, a bulletin board, or your LEGO building area. Each day, pick the challenge listed and let kids build using their LEGO bricks. That’s it – no extra materials, no complicated instructions.

Free 30 Day LEGO Challenge Calendar Printable Mockup

Kids can complete one challenge per day, or you can slow things down and spread the calendar over several weeks. There’s no rule that says you have to finish in 30 days! If a challenge sparks extra creativity, let them stick with it longer or try it again with a new design.

Encourage kids to build, test, and improve their creations. Ask questions like, “What worked?” or “How could you make it better next time?” If something doesn’t work the first time, that’s a win! Real engineers learn by trying again.

Want to make it even more fun? Have kids check off each challenge as they complete it, take photos of their builds, or redesign their favorite challenge at the end of the month. The goal isn’t perfection—it’s playful learning, problem-solving, and lots of LEGO fun.

Supplies Needed for the LEGO STEM Challenge calendar:

  • The printable 30 Day LEGO STEM Challenge calendar
  • LEGO bricks (the more you have, the more different designs you can create!)
  • LEGO baseplate

While you might need different supplies, such as baking soda and vinegar for the LEGO volcano, the 3 listed above are the basics you should have for most activities. Over the years, we have collected tons of LEGO bricks from various sets, and we have a creative box to supplement.

How to Download the LEGO STEM Challenge Calendar

Downloading the 30-Day LEGO STEM Challenge Calendar is quick and easy!

Simply click the image below to get the free printable delivered to your inbox. From there, you can save it to your device or print it right away.

You can reprint the calendar anytime or slip it into a page protector and use a dry-erase marker to reuse it again and again.

30-Day LEGO STEM Challenge Calendar Opt-In

My kids truly love these LEGO STEM challenges, and I hope yours will too! Ready to see some gears turning … not only with the LEGO pieces but also in your kid’s head!

Which challenge is your favorite one? Do you have any more STEM ideas using LEGO?

Please share in the comments below!

5 Fun LEGO STEM Activities for Kids eBook

Want even more hands-on LEGO STEM ideas your kids will love?

Check out my ebook, 5 Super Fun LEGO STEM Activities for Kids, packed with easy-to-follow challenges that encourage building, testing, and problem-solving using LEGO bricks you already have. For each activity, I clearly laid out the list of supplies, step-by-step instructions, the STEM concept behind the activity, and a list of experiments to try. 

LEGO STEM Activities eBook

To learn more about the ebook, click here!

2 thoughts on “Free Printable 30-Day LEGO STEM Challenge Calendar for Kids”

  1. Betty,
    I am a new member, this question may be obvious to others that have been here awhile. I just downloaded the 30 day calendar challenge. The directions state to follow the directions for each dates challenge. There is no link to the directions on the date challenge. How do I find/access these challenges? They sure do look like fun to me, I might even introduce them to the kiddos! LOL!
    Thank you.
    Glenda

    1. Hi Glenda, sorry I have not linked the directions on the calendar. What I mean by the directions is to follow what the challenge is every day. There is no right answer for the challenges, and that’s why I left them open-ended.
      That said for a good portion of the challenges, I do have my version of the “answers” on my website. You can use the search bar in the menu to find them!
      Let me know if I can help with anything else.

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