Twitter chats are helpful to teachers who teach single subject areas (ex: German, Chemistry) known as singletons. (thoughtco.com)
Creative Thinking — Keeping customers interested in what you're publishing comes down to covering a range of topics that fall under a single subject area. (brianhonigman.com)
• More likely — in every single subject area — to be taught by teachers who did not major or even minor in the subjects they are teaching (see Figure 2); (educationnext.org)