Educator How-To: Why square it when you could cubit?


March 23, 2013
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The cubit was Ancient Egypt’s standard unit of measure, much like our foot or meter measurement. There were two cubit lengths in ancient Egypt: the short cubit and the royal cubit. The short cubit was the distance from the elbow to the tip of the middle finger of the pharaoh. The royal cubit was the distance from the elbow to the middle fingertip, plus a palm width.

Learn how to measure like an Egyptian with our Beyond Bones latest Educator How-ToThe ancient Egyptians also had smaller units of measure called the palm and the digit. The palm was the width of your four fingers held close together, and the digit is the width of your index finger. So, to review:

• A cubit is the length from your elbow to the tips of your fingers
• A palm is the width of your four long fingers
• A digit is the width of your finger

Learn how to measure like an Egyptian with our Beyond Bones latest Educator How-ToWe’ve put together a handy little activity to teach your kids about ancient Egyptian units of measurement below:

Materials
Measuring tape
Paper
Pencil
Markers
Scissors
Stiff cardboard

Procedure
1. Separate children into pairs. They will take turns measuring each other from elbow to the tip of the middle finger using the measuring tape. They should record this number, as they will need it shortly.
2. Now, using stiff cardboard, students will measure out the same length as their measurement from elbow to fingertip and cut the cardboard to this length in the shape of a standard ruler.
3. They should then divide the cubit into palms and digits using four fingers of the hand for the palm and one finger-width for the digit divisions.
4. Using markers, students should neatly record the following information on their cubit: Their name, length of the cubit in inches, and length of the cubit in centimeters.
5. Ask the class if all of the cubits will be the same length. Why or why not?
6. Record all of the cubit lengths from the entire class and average that number. This could be the standard length of the “class cubit.”
7. Measure different items using your cubit.

Authored By Kat Havens

As a native Houstonian Kathleen has watched HMNS change and grow over the decades. Her life-long love of cultures and all things rocks and minerals brought her back to HMNS after several years away. Well versed in almost all things museum as an employee and volunteer her goal is to share her love of learning with anyone who will stop long enough to listen (or read).


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