JuliaAcademy · gavinjqu · May 9, 2026 · May 19, 2026
diff --git a/04. Dimensionality Reduction.ipynb b/04. Dimensionality Reduction.ipynb
@@ -391,7 +391,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Or we can transorm all the data via the transform function."
+    "Or we can transform all the data via the transform function."
    ]
   },
   {

diff --git a/07. Regression.ipynb b/07. Regression.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Regression"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 1,

diff --git a/08. Graphs.ipynb b/08. Graphs.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Graphs"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 2,

diff --git a/09. Numerical Optimization.ipynb b/09. Numerical Optimization.ipynb
@@ -1,5 +1,12 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Numerical Optimization"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 1,