One of the most popular booth at our STEM FAIR was our Mind Bender Birthday Magic! We could use Math Powers to read your mind and guess your birthdate with 100% accuracy! How did we do it? Learn more about it with links below! Binary Bday Trick (Numbers) Cards https://docs.google.com/document/d/12nsWWBcggm9XbpnfMx4yqY_7bg4GE-8j9zDlT0xEvp4/edit?usp=sharing Notes http://www.mathmaniacs.org/lessons/01-binary/Magic_Trick/ Lesson https://www.nctm.org/Classroom-Resources/Illuminations/Lessons/Birthdays-and-the-Binary-System/ For …