Children at the Infant & Toddler Levels (birth through age 3)

This handout will give you a general idea of the characteristics of infants (birth – 18 months) and toddlers (18 months – age 3) and their “sensitive periods,” along with thoughts about what you, as a parent, can do to support them at home.

Sensitive periods are the times during human development when children are biologically ready and receptive to acquiring a specific skill or ability, and are therefore particularly sensitive to stimuli that promote the development of that skill. A Montessori teacher prepares the environment to meet the developmental needs of each sensitive period.