• Publisher : Pegasus 
• Language : English
• Paperback : 186 pages
• ISBN-13 : 978-8131917220
• Reading age : 6 - 9 years
• Country of Origin : India

As the level goes up so is the difficulty of the puzzles and exercises. All the books are age appropriate. The coloured illustrations and engaging puzzles welcomes the child to work and improve their mathematical concepts.