Quality Montessori Materials for Toddler,
Primary and Elementary Environments.
E&O Montessori USA.
The whole set consists of 3 wooden boxes, each containing one set of 7 wooden 3 x 2.4 inches or 8 x 6cm tablets. The three sets are graded by weight; the lightest color wood is the lightest in weight, the medium color is of medium weight, and the darkest color wood is the heaviest in weight.