diff --git a/README.md b/README.md
index 3503628..d857fe2 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,7 @@ The *full stack* contains:
 * A unit test that tests this module.
 * A *Sphinx* documentation for this module.
 * A *Jupyter Notebook* showing how to use this module.
+* a *marimo* notbook using this module.
 * A Python UI application that uses this module.
 * A WebAssembly binary library and associated JavaScript code.
 * An HTML/JavaScript frontend that uses the above WebAssembly library.
@@ -91,6 +92,7 @@ The *full stack* contains:
     PY --> PYTEST[Python Module Unit Test]
     PY --> SPHINX(Sphinx Documentation)
     PY --> NOTEBOOK[Jupyter Notebook] 
+    PY --> MARIMO[Marimo Notebook]  
     PY --> PYAPP[Python UI App]
 
     F --> WASM(WebAssembly + JavaScript)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index ae47883..eda29f2 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -21,6 +21,7 @@ if(ADD_PYTHON_MODULE)
     add_subdirectory(py)
     add_subdirectory(app_py)
     add_subdirectory(py_ipynb)
+    add_subdirectory(py_marimo)
 endif()
 
 if(ADD_PY_DOCS)
diff --git a/src/py_marimo/start_marimo_notebook.sh b/src/py_marimo/start_marimo_notebook.sh
new file mode 100755
index 0000000..f31b5bd
--- /dev/null
+++ b/src/py_marimo/start_marimo_notebook.sh
@@ -0,0 +1,2 @@
+export PYTHONPATH=$PYTHONPATH:.
+marimo run title_case_marimo.py --port=2719 --headless
diff --git a/src/py_marimo/title_case_marimo.py b/src/py_marimo/title_case_marimo.py
new file mode 100644
index 0000000..fc2daab
--- /dev/null
+++ b/src/py_marimo/title_case_marimo.py
@@ -0,0 +1,40 @@
+import marimo
+
+
+__generated_with = "0.1.5"
+app = marimo.App()
+
+
+@app.cell
+def __():
+    import marimo as mo
+    return mo,
+
+
+@app.cell
+def __(mo):
+    mo.md("# Title Case Demonstration").left()
+    return
+
+
+@app.cell
+def __(mo):
+    text = mo.ui.text(placeholder="Enter text ...", label="Headline:", full_width=True)
+    return text,
+
+@app.cell
+def __(mo, text):
+    import text_conversion
+    result = text_conversion.title_case(text.value)
+    
+    return result
+
+
+@app.cell
+def __(mo, text, result):
+    mo.vstack([text, mo.md(f"Result: \"{result}\"")])
+    return
+
+
+if __name__ == "__main__":
+    app.run()
\ No newline at end of file