The Mother Layer Puzzle by Beleduc will make it easier for youngsters to understand what happens during pregnancy. Each 6 piece 5 layer is a simple illustration of the development of a baby and physical changes of mom. A perfect gift for a soon-to-be older sibling. The puzzles encourage development of fine motor skills, cognition, and visual senses. They are manufactured using quality Russian Birch plywood and child safe German inks and finishes.