Scientific Variables
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An UPDATED and FIXED video is available here: http://www.youtube.com/watch?v=nzfDvfoBv_g&list=UU__Oz1pXerLxn0Qpsy5wbFw&index=1&feature=plcp Please feel free to use in your classroom! Drop me a note or comment to let me know where the video is being shown, I'd love to find out.
