Native English speakers, can you help me understand a few words in this context?
1) Quick overview-- a brief look. 2) 'more than the usual range of student needs' means that this teacher's students are more diverse in their needs than you find in the average class. 3) it's an em dash, in this place it takes the place of putting the list of science supplies within parenthesis.
Anonymous: More than the usual range of student needs
More than the usual range of student needs: can refer to physical or emotional disabilities, distractibility, learning styles, difficult home situations, or even conditions such as asthma. This is a very broadly inclusive term.