OFFICIALLY LICENSED NUMBERBLOCKS GAMES: 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 GAMES FOR KIDS AGES 3-5: 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. HANDS-ON NUMBER TOYS: These 2-piece, self-correcting puzzles are great for practicing early addition and subtraction from 1 to 10. PORTABLE TRAVEL GAMES FOR KIDS: Each set includes 20 self-correcting puzzles explaining adding and subtracting by one! INDOOR RECESS GAMES FOR CLASSROOM: 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.