Using NO outside reference sources, determine and record "ball park" quantities for the following measurements or basic quantities. Include a brief indication of how (from whom, if in a group) you determined the quantities (examples: personal experience; guess; learned in school).
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quantity to estimate
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quantity
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how determined
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airline flight time coast-to-coast of US, in hours
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driving time coast-to-coast of US (number of hours on interstate); OK to use a selected stretch of that distance (example: Portland to Denver or Chicago)
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driving time from north to south in Oregon (number of hours on I-5); use PDX to Medford or similar as the north-south endpoints
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current world record for the 100-yard dash (or 100 meter)
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current world record for the mile run (or "metric mile" of 1500 meters)
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current world record for the marathon
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time for ordinary person to walk a mile (maybe use walking around a running track)
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number of time zones in US
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latitude of Salem, OR (ask someone who drives I-5 near there a lot)
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number of degrees in a circle
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number of degrees in a right angle (think about how a person who is walking - or thinking - exactly the wrong way has to make a "180-degree turn), and many right turns you make in a car on a one-way street grid of multi-lane streets to avoid waiting forever to make the left turn youreally want to make)
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length of a football field, in yards
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area of a football field, in square yards
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