Region · Combine · Intersect
Algebraic Inequalities
A three-lesson unit on solution regions: begin with one-dimensional inequalities, combine regions with AND or OR, then extend the same logic into overlapping half-planes.
3 / 3 lessons live
Unit throughline
An inequality describes where solutions are allowed to live.
This page organizes the unit. The actual teaching lives in the lessons below, so each lesson can keep one primary question and one primary learning object.
one region → compound regions → overlapping half-planes
01live
One-Variable Inequalitiesx < 3 → (−∞, 3)
02live
Compound Inequalitiesintersection · union
03live
Systems of InequalitiesA ∩ B = feasible region
Lessons
Follow the sequence on a first pass. Planned lessons stay visible so the shape of the unit remains clear.