This A3 5-column planner is designed for you to use your own way â fully customisable as a weekly planner, daily planner, lesson planner and project planner â you choose! With 50 sheets of sustainably sourced premium 90gsm paper, each printed on the front and plain on the reverse, youâll have plenty of space for planning. The sturdy backing board and the glued bottom edge prevent the corners curling as you work. And when youâre ready to start a new sheet itâs simply a quick and easy tear off.