7th Grade · Expressions & Equations
Closed Circle
7.EE.B.4b
Definition
Placed at the boundary value of an inequality that uses ≤ or ≥. The boundary point IS included in the solution set.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- x ≥ 4 — the boundary 4 IS included.
- x ≤ −1 — the boundary −1 IS included.
Key rule
See an equals bar in the inequality sign? Yes means closed circle.
Memory hook
Closed circle = the boundary counts.