birdy1976: Complex numbers in #math class (cc @mwoodtli @Systemdyamiker #hwz #ict) #aprilfools #imaginary #lecture #video #YouTube http://t.co/J8vWqWtO
birdy1976: Just for the fun of #IT: the geekiest #PIN numbers (by @spikedmath via @borisblog) #funny #infographic #math http://icio.us/fuKfpI
birdy1976: Online Scientific Notation #Calculator: Plotter, Converter, Solver, Complex Numbers, #Widget (via @Nunavut_Teacher) http://icio.us/zxm10s