6th Grade · Expressions & Equations
Variable
6.EE.A.2a
Definition
A letter or symbol that stands for a number that can change or is unknown.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- In 3x, the variable x can stand for any number.
- If x = 4, then 3x = 3(4) = 12.
Key rule
A variable represents an unknown or changing number.
Memory hook
A letter standing in for a number.