diff --git a/.github/workflows/run_test.yml b/.github/workflows/run_test.yml
new file mode 100644
index 00000000..c45bcbfc
--- /dev/null
+++ b/.github/workflows/run_test.yml
@@ -0,0 +1,32 @@
+name: simple_calculator unit test
+  
+on: [push]  
+  
+jobs:  
+  build:  
+    runs-on: ubuntu-latest  
+    strategy:  
+      matrix:  
+        python-version: ["3.10"]  
+  
+    steps:  
+      - uses: actions/checkout@v3  
+      - name: Set up Python ${{ matrix.python-version }}  
+        uses: actions/setup-python@v4  
+        with:  
+          python-version: ${{ matrix.python-version }}  
+      - name: Install dependencies  
+        run: |  
+          python -m pip install --upgrade pip  
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi  
+      - name: Lint with Ruff  
+        run: |  
+          pip install ruff  
+          ruff --format=github --target-version=py310 .  
+        continue-on-error: true  
+      - name: Test with pytest  
+        run: |  
+          coverage run -m pytest tests/tests_1b.py -v -s  
+      - name: Generate Coverage Report  
+        run: |  
+          coverage report -m
\ No newline at end of file
diff --git a/labs/lab_1/lab_1a.py b/labs/lab_1/lab_1a.py
index 9d15ec83..72a8f422 100644
--- a/labs/lab_1/lab_1a.py
+++ b/labs/lab_1/lab_1a.py
@@ -1,4 +1,5 @@
 """
+This is to simulate a change made on a robot: robot_speed = 5 # m/s 
 lab_1a.py
 
 The first lab in the BWSI CSS course. To complete this lab, fill out the variable on line 10
@@ -8,9 +9,9 @@
 def main():
     print("Hello World!")
 
-    name = "" # TODO: Insert your name between the double quotes
+    name = "Eva" # TODO: Insert your name between the double quotes
 
     print(f"{name}, Welcome to the CSS course!")
-
+    print("Hi, my name is Eva. I am a junior in highschool, and I enjoy learning about programming!")  
 if __name__ == "__main__":
-    main()
+    main()
\ No newline at end of file
diff --git a/labs/lab_1/lab_1b.py b/labs/lab_1/lab_1b.py
index e58dd957..83e1692a 100644
--- a/labs/lab_1/lab_1b.py
+++ b/labs/lab_1/lab_1b.py
@@ -37,6 +37,14 @@ def simple_calculator(operation: str, num1: float, num2: float) -> float:
     else:
         raise ValueError("Invalid operation. Please choose from 'add', 'subtract', 'multiply', or 'divide'.")
 
+def request_santized_number(prompt: str) -> float:
+    while True:
+        try:
+            number = float (input (prompt))
+            return number 
+        except ValueError:
+            print("Invalid input. Please enter a valid number.")
+            
 def main():
     
     print(f"===== Simple Calculator =====")
@@ -50,6 +58,5 @@ def main():
     result = simple_calculator(operation, num1, num2)
     print(f"The result of {operation}ing {num1} and {num2} is: {result}")
 
-
 if __name__ == "__main__":
     main()
diff --git a/tests/tests_1b.py b/tests/tests_1b.py
index be6b822d..8c6fa033 100644
--- a/tests/tests_1b.py
+++ b/tests/tests_1b.py
@@ -37,5 +37,13 @@ def test_invalid_operation():
     with pytest.raises(ValueError, match="Invalid operation. Please choose from 'add', 'subtract', 'multiply', or 'divide'."):
         simple_calculator("", 5, 3)                     # Test for empty operation
 
+def test_large_numbers():
+    assert simple_calculator("add", 1_000_000, 2_000_000) == 3_000_000
+    assert simple_calculator("multiply", 10_000, 10_000) == 100_000_000
+
+def test_negative_results():
+    assert simple_calculator("subtract", 3, 5) == -2
+    assert simple_calculator("divide", 1, -2) == -0.5
+
 if __name__ == "__main__":
     pytest.main()
\ No newline at end of file