sensorimotor - Birth to 24 months
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preoperational - 2 to 7 years of age
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concrete operational - 7 to 11 years of age
Mauris egestas at nibh nec finibus. Fusce at massa nec sapien auctor gravida in in tellus. Fusce at massa nec sapien auctor gravida in in tellus. Vivamus a ante congue, porta nunc nec, hendrerit turpis.
formal operational - 11 to ? years of age
Mauris egestas at nibh nec finibus. Fusce at massa nec sapien auctor gravida in in tellus. Fusce at massa nec sapien auctor gravida in in tellus. Vivamus a ante congue, porta nunc nec, hendrerit turpis.