150th Birthday On 31 August 2020, the Montessori community around the world celebrates the 150th birthday of Maria Montessori. This video, produced by AMI, celebrates her life in pictures. Tags Maria Montessori Video: Geneva Admin Course Sings Montessori Casa International, Denver, Children Sing Nienhuis Tulip Puzzle Promotional Video Kate Oliver Singing My Hand in Your Hand China Conference Premieres Montessori 150 Song