I am member of two research groups at the IREM Clermont-Ferrand. (Most of the resources linked below are in French, but you can contact me if you are interested!)
The ISO (Informatique Sans Ordinateur) Group designs activities to discover computer science without using a computer. Those activities are dedicated to elementary, middle, and/or high school students. Everything that is needed to do those activities is available on the website of the ISO group. Some examples of possible activities:
The Girls & Maths & Computer Science Group promotes mathematics and computing to young girls and addresses gender stereotypes. It organizes an annual meeting dedicated to high school girls. In particular, I participated in the organization of two of these events:
I regularly go meet with classes or participate to events open to the public to animate popularization workshops. Here is a non-exhaustive list of events in which I have participated :