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Early Childhood Sensorial Extensions

For educators and for teachers first becoming acquainted with the Montessori Sensorial Materials. Its purpose is to present the Sensorial Materials in a sequential manner, with an emphasis on consistency across the materials and within each material. In a word, creating a rationale for how we present the Montessori Sensorial Materials: retiring the arcane; reviewing and revitalizing the essence.


AMS Professional Development Requirement
AMS requires all individuals with credentials issued on or after July 1, 2013 to complete 50 hours of professional development every 5 years for the credential to remain active.

For more information and specific guidelines, please visit:

Certificate of Continuing Professional Development
Participation in AMS approved workshops and/conferences also entitles you to earn credit toward an AMS Certificate of Continuing Professional Development. AMS requires the following:

  • You must currently be a member of the American Montessori Society.
  • You must hold a Montessori credential from an AMS-affiliated teacher education program or another MACTEaccredited program, or have an AMS recognized Montessori credential from before 1992.
  • You must accrue a minimum of 120 hours of AMS approved continuing education.
  • In order to receive an AMS certificate, you must have completed three years of teaching after completion of your practicum experience. You may begin accumulating hours of attendance after you have received your credential.

When you have accumulated 120 hours of continuing education units, send the completed and signed attendance certificates to the American Montessori Society, Attn: Continuing Professional Development, 116 East 16th, 6th Floor, New York, NY 10003. An AMS Certificate of Continuing Professional Development will be sent to you.

Professional Growth