Bug Week Activity: LEGO Bug Building with Free Printable Worksheet

If your little ones love both LEGO and creepy crawlies, this Bug Week homeschool activity is a perfect way to combine creativity with learning. Using our free printable LEGO bug activity sheet, my boys built all sorts of insects — from a crawling caterpillar to a fluttering butterfly — before letting their imaginations run wild.

🧩 What We Did in Our Bug LEGO Activity

This week, as part of our home education Bug Week, we focused on designing and building bugs out of LEGO bricks. I created a simple activity sheet that included step-by-step LEGO bug building ideas, such as:

• 🐛 Caterpillar

• 🦋 Butterfly

• 🐝 Bee

• 🕷 Spider

My oldest son had a blast racing through the examples (with a little “help” from his younger brother, who enjoyed rebuilding them straight after!). The printable gave him a starting point, but the real fun came when I encouraged him to try designing his own imaginary bug.

Instead of inventing a new species, he decided to play with his completed bugs alongside some LEGO flowers he had made last week during our flower theme. It turned into a lovely free-play session, mixing building, storytelling, and science all in one.

🌱 Learning Benefits of LEGO Bug Building

This simple activity is more than just play. It encourages:

• Fine motor skills – snapping LEGO pieces together helps strengthen little hands.

• Observation skills – comparing their LEGO bugs to real insect features (legs, wings, antennae).

• Creativity & problem-solving – building imaginary bugs or adapting designs.

• Science connections – talking about different types of insects during Bug Week.

🖨 Free Printable LEGO Bug Worksheet

We’ve made our LEGO Bug Building Activity Sheet available as a free printable download. It includes simple bug designs for kids to copy and plenty of space to encourage them to invent their own.

Download the Free LEGO Bug Printable

Perfect for homeschool families, EYFS activities, or rainy day play ideas.

🐞 Tips for a Successful Bug Build

• Keep bricks in simple colours like green, black, and yellow — it makes bugs look more realistic.

• Add LEGO flowers or leaves from your collection to create a bug habitat.

• Younger siblings can help find pieces, sort by colour, or play alongside the finished bugs.

• Extend learning by reading a bug-themed story or heading outside for a real bug hunt afterwards.

🌟 Final Thoughts

Our LEGO bug activity turned into one of the highlights of Bug Week. Even though my oldest chose to stick with the bugs on the sheet, he still found endless ways to play and imagine with them. Paired with real outdoor bug hunts, crafts, and books, this activity gave us a fun, hands-on way to talk about insects at home.

If you’d like more homeschool bug activities, check out our:

• [Outdoor Bug Hunt Printable]

• [Bug Biscuit Recipe for Kids]

• [Lego Flower Building Activity]

  
  

Happy building — and happy bug hunting! 🐝