Society for Canadian Women in Science & Technology (SCWIST)
SCWIST is a not-for-profit association, founded in 1981, to help encourage girls and women into STEM. They are involved in advocacy and engage directly with the government and other organisations to influence public policy. Over the years they have run workshops for girls, seminars for parents and teachers, created videos, a database of women working in STEM, as well as networking events and conferences.
You can follow their work here:
LinkedIn: Society of Canadian Women in Science and Technology