Innovative Kids Green Start Wooden Puzzles: Ready, Set, Go (2Yrs+) Puzzle Packaged in a reusable carry-along storage case, these Earth-friendly puzzles are made with wood from sustainable forests. Created with the help of child-development experts, green start wooden puzzles exercise skills that prepare children for reading, math, problem solving and more. Four mini jigsaws in separate wells are each divided into four pieces. With slightly more detailed scenes and only background support underneath, these puzzles are perfect for young puzzlers.