Examlex
Which child does Piaget's theory have the most difficulty explaining?
Plow
A farming tool used for cutting, lifting, and turning over soil, mainly in preparation for planting.
Microlith
Small, finely crafted stone tools, typically part of composite tools, used by prehistoric peoples.
Secondary Innovation
New improvements or adaptations made to existing technologies or ideas, enhancing their functionality or applying them in new contexts.
Primary Innovation
The creation, invention, or chance discovery of a completely new idea, method, or device.
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