Looking for an easy LEGO activity that mixes play with a little science? Freeze a few LEGO minifigures in ice and challenge kids to figure out how to rescue them!
This simple LEGO ice melt activity is low-prep, hands-on, and perfect for warm days, sensory play, or a quick science investigation. Kids can experiment with water, salt, and simple tools to explore melting, make observations, and test different ideas.
Best of all, the setup is simple: an ice cube tray, LEGO minifigures, and water are all you need to get started.
Melt Ice for LEGO Sensory Play and Science
This LEGO ice melt activity is easy to set up, but you’ll want to prepare the frozen minifigures a few hours in advance.
Simply place LEGO minifigures in an ice cube tray or small container, cover with water, and freeze. Once the ice is solid, kids can experiment with different ways to rescue the figures.
It’s a simple way to explore melting and states of matter. Water freezes into a solid called ice, and as the ice warms, it changes back into liquid water.
Encourage kids to slow down and make observations as they work.
Ask:
- What do you notice about the ice?
- How does it feel?
- What happens when you add warm water?
- What happens when you add salt?
- Which method melts the ice fastest?
- What could you try next?
💡 You can also encourage kids to compare the ice before, during, and after melting.
Because the science is simple and easy to see, this activity works especially well when you connect it to something kids already enjoy—like LEGO.
The best part? You don’t need to give them many directions. Set out the frozen minifigures, a few simple tools, and let the rescue mission begin!
👉 Want more fun ways to use Mini-figs? Set up a LEGO zipline, LEGO car ramp challenge, or design a LEGO parachute!
LEGO Ice Melt Activity
Supplies:
- Ice cube mold or plastic container
- Water
- LEGO mini-figures
- Glitter and Food Coloring {optional}
Instructions:
STEP 1. Add your mini-figs to the ice cube mold.
STEP 2. Add water to cover your LEGO pieces and place in the freezer until frozen solid.
STEP 3. Once your LEGO ice cubes are frozen, get ready to explore the fun of melting ice to free your mini-figs. Set up a large bowl or tray of warm water along with meat basters and squeeze bottles.
Click here to get your FREE printable LEGO activities calendar!
More Fun With LEGO
Try one or more of these fun and easy LEGO challenges below. You can find all our LEGO building ideas here!
- Create a monochromatic mosaic or a Mondrian art puzzle with LEGO bricks.
- Make your own LEGO self-portrait.
- Have fun painting with LEGO.
- Why not teach symmetry or explore tessellations with LEGO bricks?
- Make this fun LEGO soap.
- Have fun with fairy tales and LEGO challenges
- Explore screen-free coding with playful LEGO coding activities.
- Draw emotions with these free printable LEGO faces cards.
Printable LEGO Challenge Cards
Theme LEGO challenge cards are the perfect way to breathe new life into your building challenges for each season and holiday.
- Fall LEGO Challenge Cards
- Halloween LEGO Challenge Cards
- Thanksgiving LEGO Challenge Cards
- Christmas LEGO Challenge Cards
- Valentine’s Day LEGO Challenge Cards
- Winter LEGO Challenge Cards
- St Patrick’s Day LEGO Challenge Cards
- Spring LEGO Challenge Cards
- Earth Day LEGO Challenge Cards
- Easter LEGO Challenge Cards
Get even more fun LEGO projects!
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