NCUPM

These video might be useful for todays lecture

 short intro to plurals here: https://drive.google.com/open?id=0BwObAKwFx9QBVllFUjU4NVpYWGc

short intro to dual here :https://drive.google.com/open?id=0BwObAKwFx9QBSnYtekRBVk0xM28