Link to the Slinky Interactive pdf

 Here is the .PDF that goes along with the Slinky Interactive.  The activity and PDF used to be on the same page but they seem to have changed that.  

https://www.physicsclassroom.com/Physics-Interactives/Waves-and-Sound/Slinky-Lab/Slinky-Lab-Exercise

Best,

Jim Mueller

(919) 907-3217