The Tangram Magnetic Puzzle-a-Day 2010 calendar is a unique and educational toy that provides a puzzle challenge every day of the year. With the magnetic feature, users can easily switch out the puzzles and solve them on any compatible surface. The contemporary design and brain-teasing challenges make it a fun and engaging gift for puzzle enthusiasts and students looking to improve their problem-solving skills. With its innovative concept and high-quality construction, this calendar is sure to provide hours of entertainment and enjoyment.