They could either think up, arrange and print a set of random bingo cards each time they have to run a lesson, or they buy it once so they can run the app and p

They could either think up, arrange and print a set of random bingo cards each time they have to run a lesson, or they buy it once so they can run the app and print each time, and go have dinner. They're really buying lower stress in producing future classroom activities for a range of lessons. P.S. congrats Patrick :) Doesn't your family read your blog? Think they'd miss the reference at the bottom?