Examlex
Determine the half-life of a nuclide that loses 38.0% of its mass in 387 hours.
Systematically Paying Attention
The methodical process of focusing thought and cognitive resources on specific stimuli or tasks.
Knowledge Base
A collection of structured and unstructured information used by computer systems to provide answers, solutions, or to support decision-making processes.
Backstrap Looms
A simple loom used in weaving, consisting of two sticks between which the warp threads are stretched, one tied around the weaver's waist and the other to a stationary object.
Concrete Operational Thinking
A stage in cognitive development where children are able to think logically about concrete events but have difficulty understanding abstract concepts.
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