Remember that this may be new material for some users. Aim for a one-page writeup , including any figures or diagrams. Formulate the example so few, if any, caveats are needed to reach the main point. Use parenthetical remarks sparingly . If background material is important to the example, consider giving a brief overview in the example itself, and then mentioning encyclopedia headings where more details may be found.
Topics often recur at several grade levels.
Review the Brief Table of Math Skills by Grade Group. Review the Table of Thinking and Learning Characteristics by Grade Group. Check the Curriculum Topic Benchmarks . They summarize the math and science topics usually covered at each level. Try your example out on a teacher or student.