STEM K’nex Car Racing

If your kids are into cars, this STEM project is a must-try. Engineers in training will love designing, building and racing their own K’nex race cars!

It’s the perfect STEM project for your child’s inner engineer.  Then, when you’re done building, head on over to our shop and check out our Epic STEM Challenges for more STEM fun!

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The DK series offers a huge selection of children’s science books including this one called “Car” that walks kids through the ins and outs of car design.

After reading a few key pages of the book together, I divided my summer camp students into teams and invited them to start building their own K’nex race cars.

K'nex cars. So fun!! {Playdough to Plato}

After 30 minutes of designing and testing, they were ready to start RACING!

I had made two ramps out of a wide piece of cardboard by drawing a simple black dashed line down the middle. I securely taped each end to the top of a table and let the other end rest on the floor.

Awesome K'nex race car ramp. {Playdough to Plato}

Two teams raced each other at a time. The first round, they competed for speed to see which car reached the bottom of the ramp first.

K'nex car racing. So cool!! {Playdough to Plato}

The second time, children competed for distance. They marked the spot where their car completely stopped rolling with a piece of tape. The team with the furthest tape mark won.

You can imagine the squeals of laughter (and sometimes disappointment) after each competition. The kids were surprised to find that their design made a huge impact on the car’s performance. One car might win for speed but fail miserably in the distance competition.

They eagerly huddled with their team again and started tweaking their design based on components of the winning K’nex race cars.

Then, it was back to the race track again for round two of competition!

Awesome STEM project for kids! Build and race K-nex cars.

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  1. First Grade STEM Activities - The Stem Laboratory - […] Create and race cars made from K’nex! […]
  2. 15 engineering challenges kids love {STEAM} - Gift of Curiosity - […] Build a race car using K’nex from Playdough to Plato […]

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Hi, I’m Malia.

I LOVE helping Pre-K, Kindergarten and First Grade teachers save time, stay inspired and give EVERY student bigger results. I’m so glad you’re here!