The Girls in Mathematical Sciences Program (GMSP) by AIMS Ghana is a nine month program for secondary school girls in Ghana to nurture their talents in the mathematical sciences. The mode of delivery is hybrid with monthly online masterclasses by scientists on their research areas and recent open problems.
More details here.
Each student is assigned a mentor at the beginning of the program to offer career guidance. Students usually would like to pursue STEM courses at the universities so mentors meet their mentees online at least once every quarter for mentoring sessions. Mentoring sessions will formally begin from April 2023 and end in November 2023.
Woman in STEM with at least a Bachelor's degree in a STEM field, working in industry or academia can apply for volunteering as a mentor here.