It is freely accessible (no registration is required) and intended for "anyone interested in the popularization and teaching of mathematics". On the first Monday of every month, a guest gives a talk from 5 to 6:30 p.m., followed by questions from the online audience.
On December 5 last year, Guillaume Hollard, an economics researcher and professor at the École polytechnique, discussed public policy evaluation, with a particular focus on guiding girls toward careers in science. On January 16, Pierre Arnoux, a professor at the Institut de mathématiques de Marseille, gave a talk on reforms to high schools and teacher training over the past thirty years. On February 6, Marie Lhuissier took her turn, sharing her thoughts on creating mathematical tales.
Missed a few sessions? Don't panic: all the talks are recorded and available to watch later.
Full program details and access links are available at sedimath.math.cnrs.fr.