What is a dot card?

A dot card is a teaching tool used in mathematics education to help students develop number sense and subitizing skills. It consists of a card with a grid of dots arranged in different patterns and configurations. The patterns can vary in size, shape, and arrangement, and are used to help students quickly recognize and identify different quantities without counting each individual dot.

Dot cards are often used in early childhood education and elementary math classrooms to help students develop a strong foundation in number recognition and understanding quantities. By practicing with dot cards, students can improve their ability to visually recognize numbers, understand relationships between numbers, and develop a deeper understanding of basic math concepts.

Overall, dot cards are a simple yet effective tool for enhancing students' number sense skills and supporting their mathematical development.