Chapter 1 — An Introduction to Geometry
This chapter is now split into one page per lesson, based on the teaching plan’s terms and concepts. Each page is designed for homework: vocabulary, key rules, a step-by-step helper, a worked example, and common mistakes.
Lesson one-pagers
| Lesson | Topic | One-pager |
|---|---|---|
| 1 | Lines in Designing a City | Open |
| 2 | Angles in Measuring the Earth | Open |
| 3 | Polygons and Polyhedra: Pyramid Architecture | Open |
| 4 | Constructions: Telling Time with Shadows | Open |
| 5 | We Can’t Go On Like This | Open |
What each one-pager contains
- Words to know — the exact vocabulary from the teaching plan.
- Concepts to know — the rules and big ideas.
- Formula / pattern — what to apply.
- Homework helper — “if the problem asks this, do this.”
- Worked example — a model to copy in style.
- Watch out — the mistakes to avoid.
Chapter 1 in one sentence
Geometry starts with points, lines, and planes; polygons and polyhedra add measurement; and constructions show why a drawing can be exact.