diff --git a/public/content/lessons/2023/barber-pole-1/index.mdx b/public/content/lessons/2023/barber-pole-1/index.mdx
index d642dfbe..d1b6234a 100644
--- a/public/content/lessons/2023/barber-pole-1/index.mdx
+++ b/public/content/lessons/2023/barber-pole-1/index.mdx
@@ -1,5 +1,5 @@
 ---
-title: The barber pole effect | Optics puzzles part 1
+title: The barber pole effect | Optics puzzles 1
 description: How shining polarized light through sugar water results in colored diagonal stripes
 date: 2023-09-01
 video: QCX62YJCmGk
diff --git a/public/content/lessons/2023/barber-pole-2/index.mdx b/public/content/lessons/2023/barber-pole-2/index.mdx
index 95ca94f0..ff7d35f9 100644
--- a/public/content/lessons/2023/barber-pole-2/index.mdx
+++ b/public/content/lessons/2023/barber-pole-2/index.mdx
@@ -1,5 +1,5 @@
 ---
-title: Explaining the barber pole effect from origins of light | Optics puzzles, part 2
+title: Explaining the barber pole effect from origins of light | Optics puzzles, 2
 description: How light can be described by a force due to the delayed effect of an accelerating charge, and how it can be used to explain the demo from the previous lesson.
 date: 2023-08-31
 video: aXRTczANuIs
diff --git a/public/content/lessons/2023/prism/index.mdx b/public/content/lessons/2023/prism/index.mdx
index c0f94e07..358fcfaf 100644
--- a/public/content/lessons/2023/prism/index.mdx
+++ b/public/content/lessons/2023/prism/index.mdx
@@ -1,5 +1,5 @@
 ---
-title: You can't explain prisms without understanding springs | Optics puzzles part 3
+title: Why light can “slow down”, and why it depends on color | Optics puzzles 3
 description: The origins of the index of refraction, and why it depends on color
 date: 2023-11-30
 video: KTzGBJPuJwM
diff --git a/public/content/lessons/2023/refractive-index-questions/index.mdx b/public/content/lessons/2023/refractive-index-questions/index.mdx
index fd43ee7e..195439d5 100644
--- a/public/content/lessons/2023/refractive-index-questions/index.mdx
+++ b/public/content/lessons/2023/refractive-index-questions/index.mdx
@@ -1,5 +1,5 @@
 ---
-title: X-rays "faster" than the speed of light, and more refractive index questions | Optics puzzles part 4
+title: How light can appear faster than c, why it bends, and other questions | Optics puzzles 4
 description: Answering a few viewer questions about the refractive index.
 date: 2023-12-03
 video: Cz4Q4QOuoo8