The Spindle Boxes and Counters
Montessori – Numbers
To allow the child associates each numeral with the right number situation. To introduce the number and concept of zero. There are 45 spindles, so there are exactly the right number of spindles for the exercise. If a mistake is made, the child will find that he has either too few or too many spindles when he comes to the last compartment. He can correct his work independently. The child isn’t dependent on a teacher or guide for confirmation that he or she has done the work correctly.