diff --git a/docs/tut/crash-course/14-concepts.md b/docs/tut/crash-course/14-concepts.md
index 0b9dc0c..24ca703 100644
--- a/docs/tut/crash-course/14-concepts.md
+++ b/docs/tut/crash-course/14-concepts.md
@@ -10,7 +10,7 @@ Stores a single value that can be updated.
 
 Created with `source()`.
 
-# Derived Source
+## Derived Source
 
 A new source composed of other sources.
 
@@ -46,7 +46,7 @@ Created by:
 
 Reactive scopes do track sources and will rerun when those sources update.
 
-New reactive scopes cannot be created within a reactive scope, but stable scopes
+Reactive scopes cannot be created within a reactive scope, but stable scopes
 can.
 
 ## Scope Owners
diff --git a/docs/tut/crash-course/9-derived-source.md b/docs/tut/crash-course/9-derived-source.md
index ffcdaa9..12a89b2 100644
--- a/docs/tut/crash-course/9-derived-source.md
+++ b/docs/tut/crash-course/9-derived-source.md
@@ -32,7 +32,7 @@ end
 effect(function() text() end)
 effect(function() text() end)
 
-source(1) -- prints "ran" x2
+count(1) -- prints "ran" x2
 ```
 
 To avoid this, you can use `derive()` to derive a new source instead. This will
@@ -54,7 +54,7 @@ end)
 effect(function() text() end)
 effect(function() text() end)
 
-source(1) -- prints "ran" x1
+count(1) -- prints "ran" x1
 ```
 
 `derive()` must also be called within a stable scope, just like `effect()`.