At that time, one of the top songs in the country was Beyonce's catchy, guitar-driven hit "Irreplaceable". I would hear this on the radio daily, and I had even learned to play it on guitar because I liked it so much. Somewhere in this time, the opening lyrics: "To the left, to the left..." jumped out at me. My students had trouble remembering that when looking at a graph, the domain was from the left to the right. "To the left" became "to the right" and honestly, the rest was easy. I made sure that the most important and basic ideas they needed to know were addressed in the lyrics:
- domain: x-values, left to right on the graph, first number in a coordinate point, always ordered from least to greatest
- range: y-values, up and down on the graph, second number in a coordinate point, also ordered from least to greatest
I sang and played the song on guitar by myself last year, but I wanted it to be a bit more interactive this year to make it even more memorable. Thus I put a few more phrases in boldface and after performing the song once by myself, I asked the students to sing (or at least say) the words in bold in a sing-along. Here, at last, is the now infamous song:
THE DOMAIN AND RANGE SONGJust like last year, students apparently did make a video of my performance using their contraband technology. They tell me they have posted it on YouTube and MySpace, but in two years I've never actually seen it online. I'd love to, actually, so I could send it to friends and family and have them wonder whether I've gone off the deep end or not. Until then, maybe you can use this song or create something similar to both jump start your classroom and enhance student learning. Good luck!!
To the tune of “Irreplaceable” by Beyonce
To the right, to the right
To the right, to the right
Everything in the domain from the left to the right
On the graph, domain’s the x
From least to greatest, and here's what's next
I'm talking about the range--that's the y
how far up and down the graph goes at the same time
Put those in order from least to greatest too
So you can answer the questions that I gave you
Sitting in Mr. D's class, thinking bout how he's such a fool,
How we'll never ever forget how to do
domain and range yeah
You must now know domain, you must now know the range
I can help you understand in a minute
Matter fact, you’ll pass the test in a minute, baby
You must now know domain, you must now know the range
I can help you understand for tomorrow
So don’t you ever for a second ever forget, domain and range!
So when you have a coordinate point
A pair of (x, y), just remember this
Baby the first number’s the domain,
The second number’s the range
Cause the truth of the matter is… domain and range are so is easy!
[Chorus]