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Birth
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Sit up without support
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Pulling self up to standing position
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Walking with Support
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Crawling
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Child sees object and reaches for it
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Stand Alone
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Crawling
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Walking
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Realizes hidden object still exists
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Child cries when parent is no longer present
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Cannot take another point of view
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Thinks all objects have life
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Thinks human beings created everything
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Classifies objects by color
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Understand how things work in reverse
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Can draw conclusions
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Classifies objects into larger classes of objects
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Classifies by a number of characteristics
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Thinks abstractly
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Hypothesizes
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Derives specific facts from generalization