This takes place from birth to 2 years and it is when an infant's knowledge of the world is limited to their sensory perceptions and motor activities. The behaviors are limited to simple motor responses. An infant will utilize skills and abilities they were born with when challenged or when they just want to explore the world. The infant lacks the concept of object permanence.
             When I was about to be 2 years old, my uncle would do magic tricks with a quarter. He would place the quarter in one hand, close it, move his hands around, and ask me in which hand the quarter was. I obviously chose the hand in which he placed the quarter in, but when he opened his hand, there was nothing there. I was smart enough to process in my mind that the quarter couldn't just disappear so I asked him to open his other hand. Just as I had thought, the quarter was there in his other hand and I was amazed at the fact that he teleported the coin from one hand to the other without opening his hands. I learned that things continue to exist even though they cannot be seen or touched.
             This occurs from 2 to 7 years and is characterized by the increase of playing and pretending to be someone else. The characteristics include egocentrism, thinking the world revolves around them, and a difficulty of understanding conservation. And infant will think that the bigger bottle will have more water than the smaller bottle if they both have the same amount of water.
             I remember leaving I was at my aunt's house when I was 6 years old, my mom would pick me up around 4 and we would catch the bus in downtown. Once day we were walking towards the bus stop in downtown and I saw the train passing by. I thought that I knew how to get home and that I could lead my mom there. I also noticed that the train was quicker too. I insisted that we should take the train because it's faster and she just followed me. We got in the train and ended up going to long beach. We got out and I no...