-OFFICIALLY LICENSED NUMBERBLOCKS TOYS: From the friendly TV series Numberblocks, an award winning show from BBC, the Numberblocks crew brings math learning to life with this officially licensed Numberblocks Adding and Subtracting Puzzle Set! -MATH ADDITION AND SUBTRACTION GAMES: Introduce adding and subtracting with your children's favorite Numberblocks One through Ten characters! Explore the relationship between Numberblocks One through Ten by adding or subtracting One to find a new Numberblock friend. -NUMBERS FOR TODDLERS: These 2-piece, self-correcting puzzles are great for practicing early addition and subtraction from 1 to 10. -TODDLER LEARNING ACTIVITIES: Each set includes 20 self-correcting puzzles explaining adding and subtracting by one! -KINDERGARTEN READINESS LEARNING PUZZLES: As your little one works from preschool to kindergarten, the officially licensed Numberblocks Adding and Subtracting Puzzle Set is a great way to make learning fun and help with the transition