You arrange two rows of pennies so they are equal in length. a child views the rows and states that they have the same amount of pennies. you spread out the pennies in the bottom row so that this row is longer than the top one. the child now states that the bottom row has more pennies. this child is in piaget's stage of development.

The Preoperational stage is the second stage in Piaget's hypothesis of psychological advancement. This stage starts around age two as kids begin and last until roughly age seven. Amid this stage, kids start to participate in emblematic play and figure out how to control images and symbols.

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swahili is an extremely rich and complex civilization, a set of ethnic groups articulated by a language and a series of cultural elements that fuse the african traditions, islam and indian culture. this growth was largely a result of the indian ocean trading network that brought in not just man-made riches, but also religious ideas, specifically islam, which had a significant impact on the local culture. furthermore, the development of the swahili language gave a common cultural unity to the people.