Tri-facta Addition & Subtraction: Practicing addition and subtraction is more fun when you play Tri-facta! The triangular game board is ideal for practicing 'number families' or 'fact families' and visually contributes to number sense.
'Math Rummikub' Tri-facta is comparable to Rummikub in style: the first player to empty their tile rack wins the game.
Features: - 2 to 4 players - includes a game board (25 cm), 100 tiles (with numbers up to 20) and 4 tile racks - also available: Tri-facta Multiplication & Division
