\ Please visit the Twitter post to see the video: \ Time to yell! Yell out the word NOW when the blue area covers exactly one half of the screen. After, try 25%, or 2/3! #mtbos #mathchat pic.twitter.com/o39P4tcmR3 \ \’97 Math Before Bed (@MathBeforeBed) May 25, 2017\ \ Related ← Unfinished Symmetry Circle Estimation → Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of follow-up comments by email.