How to create the notebook based assignment?
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We create a notebook, Python 3 in this case, and then enable the “Create Assignment” cell toolbar. For the last, follow the next steps: click “View” on the menu bar selecting > Cell Toolbar > Create Assignment.
    
.. image:: ./images/create_notebook_asign.png
    :width: 600px
    :align: center
    :alt: create notebook assignment

Selecting the “Create Assignment” creates a cell which by default has a dropdown menu with the “-” item selected. 

.. image:: ./images/remove_item_selected.png
    :width: 600px
    :align: center
    :alt: remove item selected

**For markdown cells**, there are two additional options to choose from, either “Manually graded answer” or “Read-only”:

.. image:: ./images/markdown_cell.png
    :width: 600px
    :align: center
    :alt: markdown cell  

While **for code cells,** there are four options to choose from, including “Manually graded answer”, “Autograded answer”, “Autograder tests”, and “Read-only”:

.. image:: ./images/code_cell.png
    :width: 600px
    :align: center
    :alt: code_cell 

These options mean 4 types of the following cells:

* **Read-only cells** are not edіtable by the students and are used prіmarіly to provіde students with іnstructіons on how to complete the assіgnment.
* **Autograded Answer cells** that are going  to be filled in by the students putting the code
* **Autograder Tests cells** mean the unit tests that the student's answer will have to pass
* **Manually Graded Answer** is used for solutions that cannot be unit tested (such as visualizations, LaTex, or paragraph responses) or where unit tests aren't quite ready for release; the option that must be manually graded by an instructor