diff --git a/orx-math/README.md b/orx-math/README.md
index 310ccf30..4eb24ae3 100644
--- a/orx-math/README.md
+++ b/orx-math/README.md
@@ -1,3 +1,19 @@
 # orx-math
 
 Mathematical utilities
+<!-- __demos__ -->
+## Demos
+### linearrange/DemoLinearRange02
+[source code](src/jvmDemo/kotlin/linearrange/DemoLinearRange02.kt)
+
+![linearrange-DemoLinearRange02Kt](https://raw.githubusercontent.com/openrndr/orx/media/orx-math/images/linearrange-DemoLinearRange02Kt.png)
+
+### linearrange/DemoLinearRange03
+[source code](src/jvmDemo/kotlin/linearrange/DemoLinearRange03.kt)
+
+![linearrange-DemoLinearRange03Kt](https://raw.githubusercontent.com/openrndr/orx/media/orx-math/images/linearrange-DemoLinearRange03Kt.png)
+
+### simplexrange/DemoSimplexRange3D01
+[source code](src/jvmDemo/kotlin/simplexrange/DemoSimplexRange3D01.kt)
+
+![simplexrange-DemoSimplexRange3D01Kt](https://raw.githubusercontent.com/openrndr/orx/media/orx-math/images/simplexrange-DemoSimplexRange3D01Kt.png)
diff --git a/orx-noise/README.md b/orx-noise/README.md
index ea29173d..245d480e 100644
--- a/orx-noise/README.md
+++ b/orx-noise/README.md
@@ -296,3 +296,8 @@ val v8 = billow(seed, x, y, z, ::perlinLinear, octaves, lacunarity, gain)
 [source code](src/jvmDemo/kotlin/rseq/DemoRseq4D01.kt)
 
 ![rseq-DemoRseq4D01Kt](https://raw.githubusercontent.com/openrndr/orx/media/orx-noise/images/rseq-DemoRseq4D01Kt.png)
+
+### simplexrange/DemoSimplexRange2D01
+[source code](src/jvmDemo/kotlin/simplexrange/DemoSimplexRange2D01.kt)
+
+![simplexrange-DemoSimplexRange2D01Kt](https://raw.githubusercontent.com/openrndr/orx/media/orx-noise/images/simplexrange-DemoSimplexRange2D01Kt.png)