Final answer:
Teachers show bias against girls in the classroom in various ways, including praising male students more, interrupting girls, and giving boys more opportunities to express themselves. This reinforces competition and different expectations for boys and girls.
Step-by-step explanation:
According to Anthony Giddens, teachers display bias against girls in the classroom in several ways. For instance, teachers tend to praise male students more than female students, interrupt girls more often, and give boys more opportunities to expand on their ideas. Teachers also tend to treat boys and girls differently, reinforcing competition rather than collaboration. Additionally, boys are often given more freedom to break rules or deviate from norms, while girls are expected to follow rules obediently.