Philadelphia is a city of neighborhoods. South Philadelphia has a mainly immigrant, working-class population, while North Philadelphia and areas west of University Park are rough and somewhat rundown. Some of the best older suburbs lie along the old Pennsylvania Railroad âMain Lineâ running to the west.
In general usage, the term direct instruction refers to (1) instructional approaches that are structured, sequenced, and led by teachers, and/or (2) the presentation of academic content to students by teachers, such as in a lecture or demonstration.
These are. 1  Supervised learning: The computer is presented with example inputs and their desired outputs, given by a teacher, and the goal is to learn a general rule that maps inputs to outputs. 2  Unsupervised learning: No labels are given to the learning algorithm, leaving it on its own to find structure in its input.