Mental Development of the Toddler

12-15 months

• Imitate the sound around him
• May use four to six letter words such as “doll” or “ball”
• Understand simple command such as bringing a cup to you when you point at and say “Please bring me the cup”, throwing the garbage” by saying “Please throw away the garbage by pointing the trash can.
• Remembers things still exist when they are out of sight, such as a ball or doll placed into a closed box.
  

15-18 months

• May use 10–20 words.
• Follow a command without a gesture.
• Stack two blocks.
  

18-24 months

• May speaks 20–50 words; understands many more
• Stack six blocks
• Able to know non-physical relationships such as turning off the radio or TV or pressing the buttons
  
• Knows how to sort toys.
• Able to search for hidden objects.
• Problem solving through experimentation.
  

24-36 months

• Practice voice modulation by yelling or whispering word.
• May string nouns and verbs to form complete but simple sentences.
• May be able learn new words, place and people’ names easily.
• Anticipates routines.
• Plays with toys in imaginative ways.
• Singing simple songs