The first series of puzzles for toddlers! Putting together puzzles develops many skills, teaches patience, precision, concentration and perception. Large, 4 mm thick cardboard blocks help small fingers in matching the elements.Features and Benefits:Putting together puzzles develops many skills, teaches patience, precision, concentration and perception.Large, 4 mm thick cardboard blocks help small fingers in matching the elements.This is an excellent manual training and at the same time great fun!This puzzle set includes 4 puzzles comprising of a 3 pieces, 4 pieces, 5 pieces and 6 pieces.