diff --git a/README.md b/README.md
index 516776c..6fd92df 100644
--- a/README.md
+++ b/README.md
@@ -342,7 +342,7 @@ Creative coding is a different discipline than programming systems in which the
 - [MFGD](https://www.youtube.com/playlist?list=PLW3Zl3wyJwWNQjMz941uyOIq3Nw6bcDYC) - Math for game developers YouTube playlist.
 - [Essence of linear algebra](https://www.youtube.com/playlist?list=PLZHQObOWTQDPD3MizzM2xVFitgF8hE_ab) - Essence of linear algebra YouTube playlist.
 - [Mathematics of Animation](https://winkervsbecks.github.io/mathematics-of-animation/#/) - Slides about the mathematics of animation ([repo](https://github.com/winkerVSbecks/mathematics-of-animation)).
-- [Handy Math](https://kynd.github.io/p5sketches/handy_math.html) - Sketching with Math and Quasi Physics.
+- [Sketching with Math and Quasi Physics](https://kynd.github.io/p5sketches/index.html) - Beautiful and visual introduction to math and quasi physics.
 
 
 ## Machine learning • Computer Vision • Ai