Updates

app.py

@@ -19,6 +19,18 @@ module_names = {
     "Subtraction": "subtraction_bases",
 }
 
+# Module descriptions
+module_descriptions = {
+    "Bases": "This module covers the presentation of numbers in various bases, including binary, octal, decimal, and hexadecimal.",
+    "Validity": "This module helps determine the validity of numbers in different bases.",
+    "Conversion": "This module covers conversion techniques between different bases, including with and without fractions.",
+    "Grouping": "This module focuses on grouping techniques for conversion between bases such as binary and hexadecimal.",
+    "Addition": "This module covers addition operations in bases like binary, octal, and hexadecimal.",
+    "2's Complement": "This module explains the 2's complement method for representing negative numbers.",
+    "Negative Numbers": "This module covers negative binary numbers and their representation.",
+    "Subtraction": "This module focuses on subtraction operations in binary using the 2's complement method.",
+}
+
 # Initialize unique session state
 if 'session_id' not in st.session_state:
     st.session_state.session_id = str(uuid.uuid4())
@@ -132,25 +144,17 @@ if module_name != st.session_state.current_module:
 # Load the current module's question
 current_question = st.session_state.questions[st.session_state.current_index]
 
-# Navigation buttons (placed on top)
-col1, col2 = st.columns([1, 1])
-with col1:
-    if st.button("⬅️ Prev", disabled=st.session_state.current_index == 0):
-        navigate_question("prev")
-
-with col2:
-    if st.button("➡️ Next"):
-        navigate_question("next")
-
 # Display module title and description
 st.title(module_name)
+st.write(module_descriptions.get(module_name, "No description available for this module."))
 st.write(current_question["question"])
 
-# Render options without background
+# Render options without pre-selection
 if not current_question.get('answered', False):
     selected_answer = st.radio(
         "Choose an answer:", 
         options=current_question['options'], 
+        index=-1,  # Ensures no option is pre-selected
         key=f"question_{st.session_state.current_index}"
     )
 
@@ -164,7 +168,7 @@ if not current_question.get('answered', False):
             st.session_state.module_correct_count[module_name] += 1
 
         # Trigger a UI update
-        st.experimental_set_query_params(dummy=not st.session_state.get('dummy', False))
+        st.set_query_params(dummy=not st.session_state.get('dummy', False))
 
 # Show correct/incorrect feedback after submission
 if current_question.get('answered', False):
@@ -180,6 +184,16 @@ if current_question.get('answered', False):
     for step in current_question['step_by_step_solution']:
         st.write(step)
 
+# Navigation buttons (placed after question and options)
+col1, col2 = st.columns([1, 1])
+with col1:
+    if st.button("⬅️ Prev", disabled=st.session_state.current_index == 0):
+        navigate_question("prev")
+
+with col2:
+    if st.button("➡️ Next"):
+        navigate_question("next")
+
 # PDF Download Button (at the bottom)
 if len(st.session_state.questions) > 0:
     pdf = generate_pdf_report()