Modelling Parabolas with Angry Birds

If you use Geometer's Sketch Pad in your math class you might want to try this activity.  Not sure if kids even know what Angry Birds is anymore but if they don't play this game you could have the kids video some classmates shooting basketballs in the gym with there cell phone to do this activity or download a video of Lebron shooting a basket.  To see the activity click here.

Sliders for Dynamic Math Presentation

With desmos you and your students can create dynamic math with their sliders.  I thought an obvious example was working with the parameters in a parabola.  What do the "a", "b" and "c" do?  Note in the video below to get the square for the parabola I used the ^ key.  Check out their site by clicking here.