Place Value Lotto is a simple but effective game to help young children develop their understanding of the often difficult concept of place value. It is played in the same manner as traditional lotto, with each player placing a counter on the correct number as called, being very careful to distinguish between the tens and units columns. By simply swapping the "caller cards'' the game can be changed to One More Lotto. Players are now asked to place a counter on any number on their board that is exactly one more than the number called. Place Value/One More Lotto has been designed for up to 5 players and includes four wipe clean mats 25cm x 331/2cm, 64 counters and 51 laminated cards.