diff --git a/Notes/1-ExecutionContext.md b/Notes/01-ExecutionContext.md similarity index 100% rename from Notes/1-ExecutionContext.md rename to Notes/01-ExecutionContext.md diff --git a/Notes/2-Execution-CallStack.md b/Notes/02-Execution-CallStack.md similarity index 100% rename from Notes/2-Execution-CallStack.md rename to Notes/02-Execution-CallStack.md diff --git a/Notes/3-Hoisting.md b/Notes/03-Hoisting.md similarity index 100% rename from Notes/3-Hoisting.md rename to Notes/03-Hoisting.md diff --git a/Notes/4-Fun-VarEnv.md b/Notes/04-Fun-VarEnv.md similarity index 100% rename from Notes/4-Fun-VarEnv.md rename to Notes/04-Fun-VarEnv.md diff --git a/Notes/5-Window-this.md b/Notes/05-Window-this.md similarity index 100% rename from Notes/5-Window-this.md rename to Notes/05-Window-this.md diff --git a/Notes/6-Undef-NotDef.md b/Notes/06-Undef-NotDef.md similarity index 100% rename from Notes/6-Undef-NotDef.md rename to Notes/06-Undef-NotDef.md diff --git a/Notes/7-Scope-LexEnv.md b/Notes/07-Scope-LexEnv.md similarity index 100% rename from Notes/7-Scope-LexEnv.md rename to Notes/07-Scope-LexEnv.md diff --git a/Notes/8-letConst-deadzone-errors.md b/Notes/08-letConst-deadzone-errors.md similarity index 100% rename from Notes/8-letConst-deadzone-errors.md rename to Notes/08-letConst-deadzone-errors.md diff --git a/Notes/9-BlockScope-Shadowing.md b/Notes/09-BlockScope-Shadowing.md similarity index 100% rename from Notes/9-BlockScope-Shadowing.md rename to Notes/09-BlockScope-Shadowing.md