Span your arms across longer objects and count how many times you can span the object with your arms. Use the middle segment of your pointer finger to measure smaller objects which you would normally measure in. 19 cm 75 in. Obviously people vary in size so its best to first measure your own body parts in order to understand how close your own proportions are to these averages. Historically units of measurement are often based on sizes of body parts. For most people their arm span is about equal to their.
Your arms will be parallel to the ground. Your arm span is the distance between the middle fingertips on each. Cubit from latin cubitum the elbow a cubit was a measurement based on the forearm from elbow to fingertip. The exact length varied according to whose arm was being used and could be from 18 to 22 inches. Here are a few more. From nose to finger tip.
Now stretch your arms out as far as they can reach. Parts of your body can be used to estimate many common units of measurement. In this lesson students will use practice measuring parts of their bodies using rulers or tape measures. Hand length heel to fingertip. Probably the most obvious example would be a foot literally being based on the length of someones or everyones or anyones actual foot. Convenient but because stretch varies a bit less consistent than these others 22 cm 85 in.
The distance between your nose. English possesses several measurement words that derive from body parts. The width of your palm is about 4 inches 10 centimeters. As students will be reviewing body vocab and numbers vocab this lesson should come after the parts of the body lesson and large numbers up to 150 should have also been taught. First we examine your arm span to height ratio. 7 cm 2 34 inat middle joint 8 cm 3 inat knuckles hand length.
Your forearm is about 15 feet 46 centimeters. Hand width from outspread thumb to little finger. How to measure things using your own body as a ruler step 1. Using your body to estimate length your hand. To take your body tape measurements you will need a flexible tape measure that you can wrap around your body parts or if you want to go old school you can wrap a string and then measure it against a straight rule. You can find flexible tape measures tapes at tailor shops clothes shops and sporting goods stores.
Stretch out your hand so that the tip of your thumb is as far away as possible from the tip of your pinky. Hold one end of the piece. Your forearm from elbow to fingertip. An average foot is about 12 inches long. One inch 25 cm is roughly the measurement from the top knuckle on your thumb to your thumb tip. The width of your four fingers where they meet.
It probably goes without saying that the unit foot was based on the length of a mans foot.