5th Grade · Geometry
Y-axis
5.G.A.1
Definition
The vertical number line on the coordinate plane.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- The y-axis goes up and down through the origin.
- Moving 3 units up from the origin along the y-axis lands at (0, 3).
Key rule
The y-value in an ordered pair tells how far to move along the y-axis.
Memory hook
Y is up and down — it climbs.