Is “just a girl” harmless fun? The trend has been shared by thousands of women and girls online, but some worry it spreads harmful ideas about women.
#Girlmath trend divides the internet

Glossary
Content creator - Somebody's whose job is to create videos and posts for social media. They might also be called an "influencer".
Sexist - Showing prejudice or discriminating against women and girls.
Stereotypes - Stereotypes are ideas about how people will act, based on the group to which they belong.
Journalist - Somebody who writes about the latest news for newspapers and magazines or explains the news on television.
Academic - Someone who does research or teaches at a university.
Underestimate - Guess that something is smaller or less important than it actually is.