Ages 9+

Glowing Pendulum


Build out this pendulum kit to explore chaotic motion. Watch patterns emerge on your glow board with the UV light. Includes a step-by-step video tutorial link, illustrated blueprint instructions, all the materials, and a special-edition Tinker Zine magazine for more fun!

Additional details

From the desk of the product designer:

Behind the design

We wanted to create a project that investigated the beautiful, chaotic motion of a double pendulum. Adding a light at the tip of the pendulum and some glow paper underneath was the perfect combo to bring it to life!

- KiwiCo Product Designer

By the numbers


Pendulums tested


Glow paper prototypes


Largest audience crammed in a dark bathroom to watch a prototype



20 reviews

Customer images



    Great kit. Granddaughter loved it. She was able to follow directions with little help.

    Page, 10


    This was the coolest thing on the planet. The darker the rook the better. Chaotic motion is really cool. Once you think it's about to stop, it keeps going! I love that you can make secret messages with citric acid, too.

    Page, 10's image 1



    My 9 year old is having so much fun exploring ways to use this project. I do wish it were a bit more sturdy.



    The pendulum was awesome to assemble and my daughter had a blast watching it drop and swoop to make chaotic patterns.



    My son really wanted to make a double pendulum so he was so excited about this crate. It contained everything he needed and the directions were easy for him to follow.



    Reading the Tinkerzine and learning about chaotic motion was a cool lesson for both me and my son. Seeing the science play out in real life was a great way of applying science to hands-on learning.

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