diff --git a/_layouts/CS126.html b/_layouts/CS126.html
index 2e8a47c2..29969e84 100644
--- a/_layouts/CS126.html
+++ b/_layouts/CS126.html
@@ -2,15 +2,7 @@
 layout: notes
 --- 
 
-{%- if page.part == true -%}
-    {% capture previous %}{{ page.prev | default: "null" }}{% endcapture %}
-
-    {% capture nextp %}{{ page.nextt | default: "null" }}{% endcapture %}
-
-    {% include 126/126nav.html nextt=nextp prev=previous %}
-
-    {{ content }}
-{%- elsif page.part == false -%}
+{%- if page.part == false -%}
 <a href="../../cs126/index.html">🏡CS126 Home</a>
     {%- for page in site.cs126 -%}
         {%- if page.part == true -%}
diff --git a/_layouts/CS130.html b/_layouts/CS130.html
index 06b7e288..ec182431 100644
--- a/_layouts/CS130.html
+++ b/_layouts/CS130.html
@@ -2,15 +2,7 @@
 layout: notes
 --- 
 
-{%- if page.part == true -%}
-    {% capture previous %}{{ page.prev | default: "null" }}{% endcapture %}
-
-    {% capture nextp %}{{ page.nextt | default: "null" }}{% endcapture %}
-
-    {% include 130/130nav.html nextt=nextp prev=previous %}
-
-    {{ content }}
-{%- elsif page.part == false -%}
+{%- if page.part == false -%}
 <a href="../../cs130/index.html">🏡CS130 Home</a>
     {%- for page in site.cs118 -%}
         {%- if page.part == true -%}
diff --git a/cs126/part1.md b/cs126/part1.md
index 92caaa04..c301b8f4 100644
--- a/cs126/part1.md
+++ b/cs126/part1.md
@@ -3,7 +3,7 @@ layout: CS126
 part: true
 math: true
 title: "Arrays and Lists"
-next: part2
+nex: part2
 ---
 
 
diff --git a/cs126/part10.md b/cs126/part10.md
index a221726c..481015e4 100644
--- a/cs126/part10.md
+++ b/cs126/part10.md
@@ -4,5 +4,5 @@ part: true
 math: true
 title: "Self-balancing trees"
 pre: part9
-next: part11
+nex: part11
 ---
diff --git a/cs126/part6.md b/cs126/part6.md
index 13fe685d..781597b4 100644
--- a/cs126/part6.md
+++ b/cs126/part6.md
@@ -2,7 +2,7 @@
 layout: CS126
 part: true
 math: true
-title: ""
+title: "Trees"
 pre: part5
 nex: part7
 ---