See the HW01.ipynb assignment as a Jupyter notebook.
When you accept the assignment, GitHub will clone the files into your own private repository. You may then clone those files onto your local machine. To submit assignment, commit changes and push your code back to GitHub, and give permission for @artkuo to access your repository.
For written parts of the assignment, any virtually any document type may be used. Most convenient may be to produce a Markdown document. You may also upload a pdf or other file. The assignment itself is produced with Jupyter notebook, which can be configured to run Matlab code and even include plots. Another option is to use Matlab Live Scripts, or Matlab Publish, to combine written information, Matlab code, and plots.