Math Song Lyrics

Smile If you like the songs that we hear in class you can download them at http://www.educationalrap.com/music/math/. This website gives you the ability to download the songs that we listen to in class onto your computer. You can also find the songs on ITunes.

The Math songs on the website teaches a range of subjects that are covered in math. "The mathematics songs will bring a creative, unique approach to the classroom that will help your students understand and internalize math concepts."-Rhythm, Rhyme Results

 Circumference (It Just Makes Sense)

Chorus
If I need to measure up a clock (circumference)
Measure the post on a dock (circumference)
If I’m buying rims for a car (circumference)
Hey, yo, 2πr! (It just makes sense)
If I need to measure up a hat (circumference)
Spinnin’ records like that (circumference)
If I need to pick the right jar (circumference)
Hey, yo, 2πr! (It just makes sense)

Verse I
Check out and see all the round things you can find
So many circles out there, it will blow your mind
It can be hard to measure distance around
But once you use a little math you can figure it out
If you need to find the distance around a circle shape
All you need is one formula and a measuring tape
Then you measure up the radius so you can figure out
‘Cause twice that radius times π is what a circle’s all about

Chorus

Verse II
You know that every circle—if it’s big or little—
Has one single point that’s right in the middle
So you start on one edge, draw a straight line
Right through the center and to the other side
That’s the diameter. And half of that is the radius
That’s the crucial number that we need to figure this out
Then we multiply it by 2π
Circumference, 2πr, there’s no need to ask why

Fractions and Decimals
Chorus
Fractions and decimals, doing math like a professional (×2)

Verse I
Changing fractions to decimals
It’s an action that I’m gonna profess to y’all
Now, I’m not trying to cause any stress for y’all
So listen up if you know what’s best for y’all
A fraction’s got two parts, don’t you know
The numerator on the top, denominator below
When you change to a decimal you gotta divide
Denominator on the left and put the numerator inside
1/2 gives you 0.5
1/4 is 0.25
1/3 is 0.333…
All the way out as far as you can see

Chorus

Verse II
Now, if you wanna change a decimal back, then
You need to remember the two parts of a fraction
We’ll say it again, just in case you forgot
Denominator on the bottom numerator on top
So find the decimal point. Now make the numbers on the right
The numerator of the fraction that you’re going to find
The denominator’s gonna be a power of ten
Like a hundred or a thousand, maybe even a million
So put a zero below for every digit on top
Then add a one to the front of it
Now you’ve got a denominator. Now you’ve got a fraction to use
And all you’ve got left to do is reduce, reduce, reduce

Chorus

Verse III
Now if percent is what you’re trying to find
You wanna start with a decimal like 0.9
Then you grab the point, move it two to the right
If you get 90%, then you grab the mic and say:
1/2 is 50%
1/4 is 25%
1/3 is 33.33333333%