A nice touch is the handy size of this activity book for small bags.
Earth by Dorling Kindersley Publishing Staff (2007, Trade Paperback)
With this activity book, you can test your observation skills with odd-one-out puzzles.
What stands out about this activity book is the spiral binding for flat pages.
You will find that the illustrated maps show trade routes clearly.
A nice touch is the sticker sheet included in this activity book for rewards.