Dr. Maria Montessori was an early childhood education theorist whose approach focused on allowing children freedom to explore and discover things independently through hands-on learning materials. Her theory emphasized using manipulatives and real-life materials to help children grasp concepts in an imaginative and play-based manner. While the teacher in the document lacked some of the recommended Montessori materials, they were able to apply some of Montessori's constructivist ideas by giving students freedom to build and explore with blocks and homemade toys in order to facilitate learning through independent play and discovery.