Sand Timers

Supplier: Avantor
WARD470002-844
470002-844KT 11.5 USD
470002-844
Sand Timers
Educational Materials Math Educational Materials Time Learning Activities
The hourglass sand timer became the ultimate expression of flowing time measuring a unit because the dried sand passed from one container to another through a narrow opening without being affected by weather. This handy set of Sand Timers, a one-minute timer and a three-minute timer, allows you to teach time concepts visually! Students get caught up in the thrill of competing against the tiny grains of sand.
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