Three years ago I blogged about using the function notation slider and every year I tweet about it for #teach180. One year someone suggested I make the slider have a third prong for the answers too. At first, I was appalled that someone didn't love the slider as is and then randomly this year I decided it was a great idea and I should do it. Now. lol
And it was a great idea! I love how it turned out and it's my favorite use of the Boomerang.
Here's the file: