Math Jingles Lyrics

There are facial expressions, like a frown and a grin.
(a frown and a grin now, a frown and a grin)
They show you what mood somebody is in.
(somebody is in now, somebody is in)
But expressions in math have numbers and signs,
Signs like PLUS, MINUS, DIVIDED BY, and TIMES . . .
But they never have an equal sign.

Chorus
No, they never have an equal sign, (equal sign)
They never, ever have an equal sign. (equal sign)
Expressions have numbers, numbers and signs,
But they never, ever have an equal sign.
Write an expression for the math situation,
Do the operations!

Math expressions, there are two different kinds.
(two different kinds now, two different kinds)
NUMERICAL EXPRESSIONS have numbers and signs.
(numbers and signs, operational signs)
You can write an expression to show the situation;
To find the value, then you do the operations . . .
But they never have an equal sign.

Chorus
But expressions never have an equal sign, (equal sign)
They never, ever have an equal sign. (equal sign)
They have letters and numbers, numbers and signs,
But they never, ever have an equal sign.
Write an expression for the math situation,
Do the operations! Oh, yeah!

ALGEBRAIC EXPRESSIONS are super-cool,
(you're no fool, you know they're super-cool)
Because a letter stands in for your variable.
(the mystery number, the variable)
To evaluate it, here's what to do,
Replace the variable with a number you choose.
To find the value, then you do the operations . . .

Chorus
But expressions never have an equal sign, (equal sign)
They never, ever have an equal sign. (equal sign)
They have letters and numbers, numbers and signs,
But they never, ever have an equal sign.
Write an expression for the math situation,
Do the operations!

Numerical expressions, (like four plus three)
Algebraic expressions, (like four plus d)
Numerical expressions, (like four plus three)
Algebraic expressions. (like four plus d)