Get smart curated videos delivered to your inbox.   SUBSCRIBE
The Kid Should See This

The Brick Double-Domino Effect Explained

Watch more with these video collections:

In 2016, bricklayers in Teralba, NSW Australia filmed their domino-style technique for capping a concrete brick wall. The video went viral thanks to the surprising second part of the chain reaction: After the bricks fell like dominoes in one direction, they quickly fell like dominoes again in reverse.

How and why did that happen? Mathematician Matt Parker shows us what’s going on in The Brick Double-Domino Effect Explained.

Plus, watch the bricks fall perfectly both ways in the original vid:

Update: This video by David Petro is another excellent example. It was inspired by Parker’s demo and took three tries to get right:

Try it yourself and let us know how it goes.

Next: Watch more domino videos and more videos about math, including Parker’s Measuring the Berlin TV Tower with a ruler.

This Webby award-winning video collection exists to help teachers, librarians, and families spark kid wonder and curiosity. TKSST features smarter, more meaningful content than what's usually served up by YouTube's algorithms, and amplifies the creators who make that content.

Curated, kid-friendly, independently-published. Support this mission by becoming a sustaining member today.