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Months 19-21

Mental Development

  • Imitate with greater precision the actions of parents
  • Use two-word phrases, usually a noun and a verb
  • Play pretend games like driving the car or making dinner
  • Know where to find things. For example, go to the door to go out or to the cabinet for a biscuit
  • Remember where they left things or where they belong
  • Ask for food, toys and other familiar items
  • Identify two pictures by pointing
  • Know how to use the word “yes”
  • Start to use deductive reasoning, that is to take two pieces of information and come to a conclusion without having to try an experiment. For example, your child might pull a chair over if they are trying to get something that is out of her reach

Visual Development

  • Have better eye-hand coordination
  • Be able to focus on objects near and far


19 Months

  • Weigh about 10.4 kg if she’s a girl or about 11.1 kg if he’s a boy
  • Be about 81.7 cm tall if she’s a girl or about 83.2 cm tall if he’s a boy

20 Months

  • Weigh about 10.6 kg if she’s a girl or about 11.3 kg if he’s a boy
  • Be about 82.7 cm tall if she’s a girl or about 84.2 cm tall if he’s a boy

21 Months

  • Weigh about 10.9 kg if she’s a girl or about 11.5 kg if he’s a boy
  • Be about 83.7 cm tall if she’s a girl or about 85.1 cm tall if he’s a boy


Motor Development

  • Drink from a cup, using both hands, without much spilling
  • Start to run
  • Walk up steps while holding on to railing for support
  • Use a spoon and fork, but not all the time
  • Like to take things apart
  • Kick a ball forward
  • Take off an article of clothing
  • Put things together

Social and Emotional Development

  • Start to understand the concepts of “you” and “me”
  • Play beside another child, but not with the other child
  • Almost always be busy doing something as they learn about people and things
  • Be more interested in exploring since they can now move horizontally and vertically
  • Have a habit of pushing other children and grabbing things from them, because they have not yet learned how to control aggressive instincts
  • Be eager to have a conversation with you, which they often start by asking “what’s this”
  • Get someone’s attention to show them something
  • Express their feelings through words or negative behaviour

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