As a postdoc at the Hausdorff center for mathematics in Bonn, I have no teaching duties this year.
Last year, I was teaching for students in the preparatory class to competitive exams (CPES) common to the University Paris XIII and the lycée J. Feyder at Epinay-Sur-Seine.
For the 3 previous years, I was teaching as a moniteur at University Paris XIII.
If you speak French, here are good links [bodin, exo7] to help you create some exercises sheets.