Hourglass
An hourglass is a timekeeping device that measures time by the flow of sand from one chamber to another. It supports lessons in time, history, and measurement.
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Description
An hourglass is a classic non-digital timekeeping tool made of two glass chambers connected by a narrow neck, allowing sand to pass from the top to the bottom over a fixed period. This object falls under both the Formal Sciences category for time measurement and Social Studies for its historical significance. Educators can use a tactile graphic of an hourglass to teach students about early tools for measuring time, explore historical inventions, and discuss the concept of elapsed time and sequencing in both math and life skills contexts.
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