0-2 y.o. - 1. Sensorimotor - "When someone hides their face - they disappear" https://drive.google.com/file/d/17ZVdBSax_UtTrs0Dp2_dShJ4AEoFWL1N/view?usp=drive_link 2-7 y.o. - 2. Preoperational - "If I pour water in a taller glass, it becomes more water" https://drive.google.com/file/d/1W4T0qGkEdaM5jq09LZbjgfuEi1y9I6vr/view?usp=drive_link 7-12 y.o. - 3. Concrete operational - "If I pour water in a taller glass, it is still the same amount of water!" https://drive.google.com/file/d/1v_I_WEqUHvp9Hgw1dxUt_YPu33hJ8Ym9/view?usp=drive_link 12-120 y.o. - 4. Formal operational - Using formal rules https://drive.google.com/file/d/156m8CvVQgF5InPNTKODXVrXo5FU1qSaE/view?usp=drive_link Unlike humans, some animals, like gazelle, learn to walk in their first few hours after being born. https://www.youtube.com/watch?v=O6e-opKZYFk Good things, like human ability to think, need time to develop. If you keep practicing writing the new words, talking and expressing your