diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index aa0a6b5..0a10f6b 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -13,7 +13,7 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "4a1s/RAS/Projeto.md",
+                "file": "4a1s/CP/PL - Aula 4.md",
                 "mode": "source",
                 "source": false
               }
@@ -85,7 +85,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "4a1s/RAS/Projeto.md",
+                "file": "4a1s/CP/PL - Aula 4.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -102,7 +102,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "4a1s/RAS/Projeto.md",
+                "file": "4a1s/CP/PL - Aula 4.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -125,7 +125,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "4a1s/RAS/Projeto.md"
+                "file": "4a1s/CP/PL - Aula 4.md"
               }
             }
           },
@@ -160,8 +160,11 @@
   },
   "active": "98e0287d38212615",
   "lastOpenFiles": [
-    "4a1s/RAS/T - Aula 3.md",
+    "4a1s/CP/PL - Aula 3.md",
+    "4a1s/CP/PL - Aula 2.md",
+    "4a1s/CP/PL - Aula 4.md",
     "4a1s/RAS/Projeto.md",
+    "4a1s/RAS/T - Aula 3.md",
     "4a1s/index.md",
     "4a1s/RAS/PL - Aula 3.md",
     "4a1s/RAS/PL - Aula 1.md",
@@ -185,10 +188,7 @@
     "4a1s/Excalidraw/Untitled.md",
     "Excalidraw/doodles.excalidraw.md",
     "Excalidraw/Drawing 2023-09-27 09.57.48.excalidraw.md",
-    "4a1s/CP/PL - Aula 3.md",
     "4a1s/CP/T - Aula 2 - 19 Setembro.md",
-    "4a1s/CP/PL - Aula 2.md",
-    "4a1s/RAS/Notas Projeto RAS.md",
     "Excalidraw",
     "-.32118",
     "4a1s/ASCN/T",
diff --git a/4a1s/CP/PL - Aula 4.md b/4a1s/CP/PL - Aula 4.md
new file mode 100644
index 0000000..a2847bd
--- /dev/null
+++ b/4a1s/CP/PL - Aula 4.md	
@@ -0,0 +1,3 @@
+4 de Outubro 2023 - #CP 
+
+## Ex. 2