How Many? activity cards build perceptual and conceptual subitizing skills with simple dot patterns on up to larger sets of dots in array and symmetrical patterns. Putting these dots into a grid format allows students to see the patterns and conceptually subititze larger numbers with great precision and speed. The Level 1 set presents dot patterns up to 20.

These card decks are great for small group practice like flash cards or independent exercise as self-checking number words and numerals provide the answer on the reverse side of the card.