Fourth-graders at Ivy Stockwell Elementary School explore the concept of “millions” using the Promethean ActiveBoard.

Teacher Lori Fulka explains Cooper Sellard’s correct answer and the importance of comma placement in large numbers as (front to back) John Sevy, Joshual Schumacher and Cameron Sacora await their turn.

Fulka is using one of the thousands of lesson plans available from Promethean Planet, which makers of the board call “The world’s largest interactive teaching community.”