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Home / Early Learning / Science / LEGO Science Scavenger Hunt

LEGO Science Scavenger Hunt

Shared by Mary Catherine 3 Comments

A few weeks ago we had a “snow” day off from school (it didn’t really snow, much to our dismay). We ended up having visitors who were also off from school, so Engineer and I made up a science scavenger hunt with LEGO bits and bobs.

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Frozen bricks and minifigures for a LEGO science scavenger hunt. Such a fun science activity for kids!

Table of Contents

  • a science scavenger hunt for kids who love LEGO!
  • Done-for-You Preschool Resources

a science scavenger hunt for kids who love LEGO!

I may get commissions for purchases made through links in this post.

Materials
Baking soda
Vinegar
Building bricks & minifigure ice cube trays
Random LEGO pieces and people
Twisty eye droppers

Prep
Engineer and I searched through his LEGO bins for small pieces to hide in the ice cube trays. He and I then set everything out on a white piece of paper and took a picture (so the kids knew which pieces they were hunting for).

LEGO science scavenger hunt using random small LEGO items

Related: Unique Ideas for Growing Crystals

Then we whipped up a batch of baking soda and water. When we created our icy, fizzy letters, the kiddo and I determined the best “recipe” was 3 parts baking soda and 1 part water. This yields kind of a pasty mixture, but that’s the goal.

Preparing for a LEGO science scavenger hunt. So much for for the kids!

Engineer and I grabbed the LEGO-inspired ice cube trays and added a little bit of our baking soda mixture. Then we popped in our LEGO bits and bobs and covered them up with more of the mixture. To get the mix to settle into the trays, simply tap them a few times on the counter. They’ll look more uniform and liquidy at this point.

I loved using the minifigure ice cube tray for a LEGO science scavenger hunt! So much playful learning.

Related: Pinterest Lego Activities for Kids

The trays went into the freezer, and then we had to wait. They were in the freezer for about three hours before we played with them.

Set Up
I grabbed a colorful sorting tray I’d picked up at the Dollar Tree. A bowl of vinegar went in the middle, along with some fun squiggly eyedroppers. Then I popped out some of the bricks and men, leaving the rest in the freezer for later.

Everything's ready for a LEGO science scavenger hunt!

Related: Simple LEGO Sensory Bottle Kids Can Make

What the kids did
Of course, by this point I was swarmed by kiddos who wanted to play our science scavenger hunt game! I told them we were looking for the LEGO items in the picture and challenged them to work together to find everything. So off they went!

The kids' hands and fingers got a great workout during our LEGO science scavenger hunt!

A ton of fun ensued! Engineer schooled the younger kiddos about the reaction that occurs when vinegar and baking soda mix. I loved hearing him explain it to them, and they definitely paid attention!

The kids took turns squeezing vinegar onto the LEGO bricks and men. There were exclamations about the fizzing reaction, the coldness of the liquid, and the happiness over finding some of the hidden LEGO bits.

Watching the chemical reaction during a LEGO science scavenger hunt!!

This activity took over an hour, and we only stopped because we ran out of frozen bricks! I’ve already been asked twice to redo this experiment, so I’d say it was a hit.

What a fun idea - a LEGO science scavenger hunt!

Related: LEGO Engineering Challenges to Inspire the kids

The learning
Some of the concepts the children touched out during our science scavenger hunt:

  • Fine motor skills
  • Changing states of matter
  • Endothermic reactions
  • Visual discrimination
  • Chemical changes

So, would your kids enjoy our LEGO science scavenger hunt? I’d love to hear your thoughts!

LEGO science scavenger hunt for kids - so much playful learning!

Done-for-You Preschool Resources

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Filed Under: Science Tagged With: Legos

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Comments

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  1. Sheila @ Brain Power Boy says

    February 13, 2015 at 3:31 pm

    Had to stop by to see the whole post after seeing this on Pinterest. This is an awesome idea. What a lot of fun kds wll have with this one! Sharing

    Reply
  2. Sarah says

    February 15, 2015 at 12:35 am

    Great fun! I’ll definitely add this to my ‘snow play’ board. I might try to use my son’s little animal figures– I just need to find a tray with big enough spaces for them!

    Reply
  3. Rebecca says

    February 27, 2015 at 9:56 am

    Super cute and clever!

    Where did you get those squiggly droppers?! Our little hands would LOVE those!

    Reply
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My name is Mary Catherine, and I love to share meaningful {and fun} learning activities for kiddos! Feel free to browse and stay awhile!

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