K12 is calling all aspiring scientists, techies, engineers, and mathematicians to step into the lab and enter our Annual STEM Contest!

This year's theme is MAKE A SPLASH! To enter, you'll design and build a Rube Goldberg machine—that is, a complex contraption of linked parts that creates a domino effect. The only other requirement is that your machine, in some way, makes use of water.

How will your machine make a splash? Will it drop an object into a pool of water? Will it create an exquisite fountain? Will it make water change colors? Show us by creating your very own machine.

The K12 STEM Contest is open to all students in kindergarten through 12th grade, and prizes will be awarded to the top three winners in each grade level, as well as one overall "Best-in-Show" winner for the entry that blows our judges out of the water!

Find Out More

  • Flower Power!
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    Hello everyone! My name is Bayan and I am in the First grade. The name of my machine is called Flower Power! This simple...

  • Dock Dive
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    My Stem machine is called Dock Dive. My car will slide down the track to hit the dog on the ramp. The dog on the ramp will hit...

  • DCB
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    This machine starts has lots of steps.

    • It starts with a ball bearing down a Q-BA-Maze
    • into a Lincoln Log...

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    my stem machine is really simple im just trying to get the water to go from one come and go to the other cup through a channel...

  • Water machine
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    We bought some old toys from a thrift shop, and other miscellanious items around the house to make a machine that will help a...

  • Dahlia’s Rainbow Maker
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    My name’s Dahlia and I’m in the 1st grade. This is my rainbow maker That will give my trolls a bath! I used water bottles,...

  • The Foot Bombenator
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    My name’s Dalilah and My machine is made by a ramp and train tracks, Jenga blocks, magnetic blocks, cars,tape, string, bath...

  • Water Ball Drop
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    We used Jenga blocks to build a path for a rubber Ball to fall off our dining room table and into a cup of water. It took...

  • Domino Ripple Waterfall
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    Hi, my name is Callie, and my STEM machine is composed of what scientists use on a daily basis when experimenting, resources,...

  • Disney Inspired Domino Effect
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    My sister and I decided to make a Disney Inspired theme becuase it is our favourite movie production. We are in the 7th and...

  • Glitter and paint water
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    my stem machin makes a nice abstract art in water it uses a few things like marbles,jenga blocks, a bowl, and a cup with water...

  • Bird Dip
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    Hello, My name is Sophia and I'm in Kindergarten. I made this bird dip machine. I connected parts of my marble machine to...

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    From Tristan: I joined LAVCA about 3 years ago.  I was having a tough time in my other school with my ADD and ADHD symptoms. ...

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    After Mom took Dad to the ER on Nov. 26,2015 [Thanksgiving that year], Dad was gone from our life on earth.

    The ship...

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    Im a mom. I have five chirldren and a amazing suportive husband. People looking at my family in the grocery store or Target...

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    I am a Muslim. There are some people who have been asking me what "that thing" on my head is (A.k.a Hijab). Since the 9/11...

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    This is a sea turtle named "Tide," The mosaic was made of colored broken glass and then baked in a special over for 36 hours...

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    i was born in california and i live there now i have italianand filipino from my moms side of the family and i am mexican and...

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    The African Box Mask is a representation of our African Culture. Savannah made this out of a currogated box and painted her...

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    Some of my views of other cultures are a little bit fuzzy, but still beautiful.

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    We lived in Germay for ten years, and we often visited cultural icons, such as Neuschwanstein Castle.  Because some of my...

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    This is a picture of a Pakistani family enjoying the festival of Eid in front of two famous Pakistani monuments ,wearing...

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    My family and I find many ways to celebrate our culture. I am an American who was born in New Jersey, and my parents are also...

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    This is a picture that represents pakistan's 4 different states and their beautiful and colorful culture .This shows how the...

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    My picture is bout food. Food is very important in my culture. It  brings my family together in happy times and sad times.