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Infant Toddler Development Training
Module 1, Lesson 1


This lesson presents basic knowledge about typical child development. Samples of typical milestones in the areas of motor/physical, cognitive, social/emotional, communication/language, and self-help/adaptive are presented. Even though no two children mature and develop alike, there are predictable sequences in all of the developmental domains.

Learning Objectives

Upon completion of this lesson, you will be able to:

  • Define child development
  • Define atypical development
  • Identify one characteristic of fetal development that occurs during each stage (first trimester, second trimester, third trimester)
  • Describe each of the major domains of child development: motor/physical, cognitive, social/emotional, communication/language, and self-help/adaptive
  • Describe the typical (normal) sequences of child development as it pertains to the major domains
  • Differentiate between qualitative and quantitative differences in child development
  • Explain egocentrism and its influence on social relationships in infancy
  • Describe trends in the physical development of children from birth to age 3
  • Describe how thinking changes from birth to age 3
  • Explain why it is important to look at child development from a culturally relevant perspective.


The following resources are necessary for the completion of this lesson. Learners may wish to access and print a hard copy of the resources prior to beginning the lesson and for future reference. Some resource documents can be found in the Resource Bank. Others are available online.

Key Words

Definitions of key words are found in the glossary.

  • Atypical child development
  • Child development
  • Cultural differences
  • Developmental milestones
  • Egocentrism
  • Qualitative differences in child development
  • Quantitative differences in child development


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