Teaching terms starting with O

6 elementary teaching terms beginning with the letter O, covering math, science, reading and writing. Each entry explains what the term means in a PreK-5 classroom, which grades it applies to, and how it shows up in everyday teaching, with links to matching printable worksheets.

The Teaching Wiki is written for teachers and parents who want a straight answer, not a research paper. If you have run into a O term on a report card, in a curriculum guide, or in a message from school and want to know what it actually means in practice, start here.