This is a great visual tool to help students understand how to convert among particles, grams, liters and moles.  The Mole Kingdom can help students that are not mathematical-logical learners.  By seeing a tangible representation of the values, students can develop logical conversions.  This is a great tool to kick of stoichiometry.
 
The file is designed for a 20" x 30" poster.  After purchase, dowload the file and then send it to your favorite large format printing service (Walgreens, Staples, etc).
 
Here is a blog describing how I use it.
 
The download does not have the large "Stoich Decks" logo across it.