From 3f49ba836517e34eeb8bc139e88cce51d5d0ede7 Mon Sep 17 00:00:00 2001
From: Alex Manochio <cajm23331@gmail.com>
Date: Fri, 10 Apr 2026 16:21:15 -0400
Subject: [PATCH 1/2] Apply suggested fix to
 math/grade4/division-remainders.html from Copilot Autofix

Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>
---
 math/grade4/division-remainders.html | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/math/grade4/division-remainders.html b/math/grade4/division-remainders.html
index 0792c3e..192b795 100644
--- a/math/grade4/division-remainders.html
+++ b/math/grade4/division-remainders.html
@@ -244,6 +244,12 @@ <h1 style="color: var(--lab-blue);">Remainder Master!</h1>
       const userR = parseInt(document.getElementById('r-input').value);
       const fb = document.getElementById('feedback');
       
+      if (Number.isNaN(userQ) || Number.isNaN(userR)) {
+        fb.style.color = "#d63031";
+        fb.textContent = "Please enter numbers for both quotient and remainder.";
+        return;
+      }
+      
       if(userQ === currentQ.q && userR === currentQ.r) {
         fb.style.color = "var(--success)";
         fb.textContent = "Perfectly balanced! ✔️";

From 270afedc1d04aaa86d03b24b3d20232fc9ebdad0 Mon Sep 17 00:00:00 2001
From: Alex Manochio <cajm23331@gmail.com>
Date: Fri, 10 Apr 2026 16:21:16 -0400
Subject: [PATCH 2/2] Apply suggested fix to
 math/grade4/division-remainders.html from Copilot Autofix

Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>
---
 math/grade4/division-remainders.html | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/math/grade4/division-remainders.html b/math/grade4/division-remainders.html
index 192b795..1431d25 100644
--- a/math/grade4/division-remainders.html
+++ b/math/grade4/division-remainders.html
@@ -161,7 +161,21 @@ <h1 style="color: var(--lab-blue);">Remainder Master!</h1>
     let currentQ = { q: 0, r: 0 };
 
     auth.onAuthStateChanged(user => {
-      if (user) { currentUser = user; syncProgress(); }
+      if (user) {
+        currentUser = user;
+        syncProgress();
+      } else {
+        currentUser = null;
+        stepsCompleted = {
+          step_0: false,
+          step_1: false,
+          step_2: false,
+          step_3: false,
+          step_4: false,
+          step_5: false
+        };
+        updateSidebar();
+      }
     });
 
     async function syncProgress() {